CISA Advisories

View CSAF Summary Hitachi Energy is aware of vulnerabilities that affect RTU500 product versions listed in this document. If exploited, these vulnerabilities primarily impact product availability, with potential secondary impacts on confidentiality and integrity. Please refer to the Recommended Immediate Actions for information about the mitigation/remediation. The following versions of Hitachi Energy RTU500 are affected: RTU500 series CMU Firmware vers:RTU500_series_CMU_Firmware/>=12.7.1|<=12.7.7, vers:RTU500_series_CMU_Firmware/>=13.5.1|<=13.5.4, vers:RTU500_series_CMU_Firmware/>=13.6.1|<=13.6.3, vers:RTU500_series_CMU_Firmware/>=13.7.1|<=13.7.8, 13.8.1, vers:RTU500_series_CMU_Firmware/>=13.7.1|<=13.7.7 (CVE-2025-69421, CVE-2026-24515, CVE-2026-25210, CVE-2026-32776, CVE-2026-32777, CVE-2026-32778, CVE-2026-8479, CVE-2025-69421, CVE-2026-24515, CVE-2026-25210, CVE-2026-32776, CVE-2026-32777, CVE-2026-32778, CVE-2026-8479, CVE-2025-69421, CVE-2026-24515, CVE-2026-25210, CVE-2026-32776, CVE-2026-32777, CVE-2026-32778, CVE-2026-8479, CVE-2025-69421, CVE-2026-24515, CVE-2026-25210, CVE-2026-32776, CVE-2026-32777, CVE-2026-32778, CVE-2025-69421, CVE-2026-24515, CVE-2026-25210, CVE-2026-32776, CVE-2026-32777, CVE-2026-32778, CVE-2026-8479, CVE-2026-8479) CVSS Vendor Equipment Vulnerabilities v3 7.8 Hitachi Energy Hitachi Energy RTU500 NULL Pointer Dereference, Integer Overflow or Wraparound, Loop with Unreachable Exit Condition ('Infinite Loop') Background Critical Infrastructure Sectors: Dams, Energy, Water and Wastewater Countries/Areas Deployed: Worldwide Company Headquarters Location: Switzerland Vulnerabilities Expand All + CVE-2025-69421 CWE-476: NULL Pointer Dereference. Issue summary: Processing a malformed PKCS#12 file can trigger a NULL pointer dereference in the PKCS12_item_decrypt_d2i_ex() function. Impact summary: A NULL pointer dereference can trigger a crash which leads to Denial of Service for an application processing PKCS#12 files. The PKCS12_item_decrypt_d2i_ex() function does not check whether the oct parameter is NULL before dereferencing it. When called from PKCS12_unpack_p7encdata() with a malformed PKCS#12 file, this parameter can be NULL, causing Denial of Service impact. The vulnerability is limited to Denial of Service and cannot be escalated to achieve code execution or memory disclosure. Product is affected, if a privileged user uploads a malformed PKCS#12 certificate via web interface or if PKI client functionality is configured. View CVE Details Affected Products Hitachi Energy RTU500 Vendor: Hitachi Energy Product Version: RTU500 series CMU Firmware version 12.7.1 – 12.7.7, RTU500 series CMU Firmware version 13.5.1 – 13.5.4, RTU500 series CMU Firmware version 13.6.1 – 13.6.3, RTU500 series CMU Firmware version 13.7.1 – 13.7.8, RTU500 series CMU Firmware version 13.8.1 Product Status: known_affected Remediations Vendor fix Update to CMU Firmware version 13.8.2 Mitigation Follow general mitigation factors/workarounds Vendor fix Update to CMU Firmware version 13.7.9 (when available) or 13.8.2 Relevant CWE: CWE-476 NULL Pointer Dereference Metrics CVSS Version Base Score Base Severity Vector String 3.1 6.5 MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2026-24515 CWE-476: NULL Pointer Dereference. In libexpat before 2.7.4, XML_ExternalEntityParserCreate does not copy unknown encoding handler user data, causing Denial of Service impact. Product is only affected if IEC 61850 functionality is configured. View CVE Details Affected Products Hitachi Energy RTU500 Vendor: Hitachi Energy Product Version: RTU500 series CMU Firmware version 12.7.1 – 12.7.7, RTU500 series CMU Firmware version 13.5.1 – 13.5.4, RTU500 series CMU Firmware version 13.6.1 – 13.6.3, RTU500 series CMU Firmware version 13.7.1 – 13.7.8, RTU500 series CMU Firmware version 13.8.1 Product Status: known_affected Remediations Vendor fix Update to CMU Firmware version 13.8.2 Mitigation Follow general mitigation factors/workarounds Vendor fix Update to CMU Firmware version 13.7.9 (when available) or 13.8.2 Relevant CWE: CWE-476 NULL Pointer Dereference Metrics CVSS Version Base Score Base Severity Vector String 3.1 2.5 LOW CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L CVE-2026-25210 CWE-190: Integer Overflow or Wraparound. In libexpat before 2.7.4, the doContent function does not properly determine the buffer size bufSize because there is no integer overflow check for tag buffer reallocation, primarily causing Denial of Service and potentially confidentiality and integrity impact to the product. Product is only affected if IEC 61850 functionality is configured. View CVE Details Affected Products Hitachi Energy RTU500 Vendor: Hitachi Energy Product Version: RTU500 series CMU Firmware version 12.7.1 – 12.7.7, RTU500 series CMU Firmware version 13.5.1 – 13.5.4, RTU500 series CMU Firmware version 13.6.1 – 13.6.3, RTU500 series CMU Firmware version 13.7.1 – 13.7.8, RTU500 series CMU Firmware version 13.8.1 Product Status: known_affected Remediations Vendor fix Update to CMU Firmware version 13.8.2 Mitigation Follow general mitigation factors/workarounds Vendor fix Update to CMU Firmware version 13.7.9 (when available) or 13.8.2 Relevant CWE: CWE-190 Integer Overflow or Wraparound Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.8 HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVE-2026-32776 CWE-476: NULL Pointer Dereference. libexpat before 2.7.5 allows a NULL pointer dereference with empty external parameter entity content, causing Denial of Service impact. Product is only affected if IEC 61850 functionality is configured. View CVE Details Affected Products Hitachi Energy RTU500 Vendor: Hitachi Energy Product Version: RTU500 series CMU Firmware version 12.7.1 – 12.7.7, RTU500 series CMU Firmware version 13.5.1 – 13.5.4, RTU500 series CMU Firmware version 13.6.1 – 13.6.3, RTU500 series CMU Firmware version 13.7.1 – 13.7.8, RTU500 series CMU Firmware version 13.8.1 Product Status: known_affected Remediations Vendor fix Update to CMU Firmware version 13.8.2 Mitigation Follow general mitigation factors/workarounds Vendor fix Update to CMU Firmware version 13.7.9 (when available) or 13.8.2 Relevant CWE: CWE-476 NULL Pointer Dereference Metrics CVSS Version Base Score Base Severity Vector String 3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2026-32777 CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop'). libexpat before 2.7.5 allows an infinite loop while parsing DTD content, causing Denial of Service impact. Product is only affected if IEC 61850 functionality is configured. View CVE Details Affected Products Hitachi Energy RTU500 Vendor: Hitachi Energy Product Version: RTU500 series CMU Firmware version 12.7.1 – 12.7.7, RTU500 series CMU Firmware version 13.5.1 – 13.5.4, RTU500 series CMU Firmware version 13.6.1 – 13.6.3, RTU500 series CMU Firmware version 13.7.1 – 13.7.8, RTU500 series CMU Firmware version 13.8.1 Product Status: known_affected Remediations Vendor fix Update to CMU Firmware version 13.8.2 Mitigation Follow general mitigation factors/workarounds Vendor fix Update to CMU Firmware version 13.7.9 (when available) or 13.8.2 Relevant CWE: CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop') Metrics CVSS Version Base Score Base Severity Vector String 3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2026-32778 CWE-476: NULL Pointer Dereference. libexpat before 2.7.5 allows a NULL pointer dereference in the function setContext on retry after an earlier out-of-memory condition, causing Denial of Service impact. Product is only affected if IEC 61850 functionality is configured. View CVE Details Affected Products Hitachi Energy RTU500 Vendor: Hitachi Energy Product Version: RTU500 series CMU Firmware version 12.7.1 – 12.7.7, RTU500 series CMU Firmware version 13.5.1 – 13.5.4, RTU500 series CMU Firmware version 13.6.1 – 13.6.3, RTU500 series CMU Firmware version 13.7.1 – 13.7.8, RTU500 series CMU Firmware version 13.8.1 Product Status: known_affected Remediations Vendor fix Update to CMU Firmware version 13.8.2 Mitigation Follow general mitigation factors/workarounds Vendor fix Update to CMU Firmware version 13.7.9 (when available) or 13.8.2 Relevant CWE: CWE-476 NULL Pointer Dereference Metrics CVSS Version Base Score Base Severity Vector String 3.1 5.5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVE-2026-8479 CWE-476: NULL Pointer Dereference. IEC 60870-5-104 used in bidirectional mode is vulnerable for a NULL pointer dereferencing, if a specially crafted sequence of messages is sent for a certain time, causing Denial of Service impact. Product is only affected if IEC 60870-5-104 functionality in bidirectional mode (BCI) is configured. View CVE Details Affected Products Hitachi Energy RTU500 Vendor: Hitachi Energy Product Version: RTU500 series CMU Firmware version 12.7.1 – 12.7.7, RTU500 series CMU Firmware version 13.5.1 – 13.5.4, RTU500 series CMU Firmware version 13.6.1 – 13.6.3, RTU500 series CMU Firmware version 13.7.1 – 13.7.7, RTU500 series CMU Firmware version 13.8.1 Product Status: known_affected Remediations Vendor fix Update to CMU Firmware version 13.8.2 Mitigation Follow general mitigation factors/workarounds Vendor fix Update to CMU Firmware version 13.7.8 Relevant CWE: CWE-476 NULL Pointer Dereference Metrics CVSS Version Base Score Base Severity Vector String 3.1 6.5 MEDIUM CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H 4.0 6.9 MEDIUM CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N Acknowledgments Hitachi Energy Internal Team reported this vulnerability to CISA. Notice The information in this document is subject to change without notice and should not be construed as a commitment by Hitachi Energy. Hitachi Energy provides no warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, for the information contained in this document, and assumes no responsibility for any errors that may appear in this document. In no event shall Hitachi Energy or any of its suppliers be liable for direct, indirect, special, incidental or consequential damages of any nature or kind arising from the use of this document, or from the use of any hardware or software described in this document, even if Hitachi Energy or its suppliers have been advised of the possibility of such damages. This document and parts hereof must not be reproduced or copied without written permission from Hitachi Energy and the contents hereof must not be imparted to a third party nor used for any unauthorized purpose. All rights to registrations and trademarks reside with their respective owners. Support For additional information and support please contact your product provider or Hitachi Energy service organization. For contact information, see https://www.hitachienergy.com/contact-us/ for Hitachi Energy contact-centers. General Mitigation Factors Recommended security practices and firewall configurations can help protect a process control network from attacks that originate from outside the network. Such practices include that process control systems are physically protected from direct access by unauthorized personnel, have no direct connections to the Internet, and are separated from other networks by means of a firewall system that has a minimal number of ports exposed, and others that have to be evaluated case by case. Process control systems should not be used for Internet surfing, instant messaging, or receiving e-mails. Portable computers and removable storage media should be carefully scanned for viruses before they are connected to a control system. Proper password policies and processes should be followed. Additional information on Industrial Control Systems Cybersecurity Best Practices can be found in the following Hitachi Energy Cybersecurity Notification. Cybersecurity Advisory - Industrial Control Systems Cybersecurity Best Practices SSVC SSVCv2/E:N/A:N/2026-05-26T08:50:36Z/ Legal Notice and Terms of Use This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy). Recommended Practices CISA recommends users take defensive measures to minimize the exploitation risk of this vulnerability. Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolate them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most recent version available. Also recognize VPN is only as secure as its connected devices. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. Advisory Conversion Disclaimer This ICSA is a verbatim republication of Hitachi Energy PSIRT 8DBD000252 from a direct conversion of the vendor's Common Security Advisory Framework (CSAF) advisory. This is republished to CISA's website as a means of increasing visibility and is provided "as-is" for informational purposes only. CISA is not responsible for the editorial or technical accuracy of republished advisories and provides no warranties of any kind regarding any information contained within this advisory. Further, CISA does not endorse any commercial product or service. Please contact Hitachi Energy PSIRT directly for any questions regarding this advisory. Revision History Initial Release Date: 2026-05-26 Date Revision Summary 2026-05-26 1 Initial public release 2026-06-04 2 Initial CISA Republication of Hitachi Energy PSIRT 8DBD000252 advisory Legal Notice and Terms of Use

View CSAF Summary B&R is aware of a vulnerability in the product versions listed as affected in the advisory. An attacker who successfully exploits this vulnerability could make the OPC-UA server of the product inaccessible. The following versions of B&R PPT30 Operating System are affected: PPT30 Operating System <1.8.0, 1.8.0 (CVE-2025-11482) CVSS Vendor Equipment Vulnerabilities v3 7.5 B&R Industrial Automation GmbH B&R PPT30 Operating System Allocation of Resources Without Limits or Throttling Background Critical Infrastructure Sectors: Commercial Facilities, Critical Manufacturing, Energy, Transportation Systems, Water and Wastewater Countries/Areas Deployed: Worldwide Company Headquarters Location: Switzerland Vulnerabilities Expand All + CVE-2025-11482 An Allocation of Resources Without Limits or Throttling vulnerability in the OPC-UA Server used in PPT30 Operating System versions before 1.8.0 may be used by an unauthenticated network-based at-tacker to permanently prevent legitimate users from interacting with the service. View CVE Details Affected Products B&R PPT30 Operating System Vendor: B&R Industrial Automation GmbH Product Version: B&R Industrial Automation GmbH PPT30 Operating System <1.8.0 Product Status: fixed, known_affected Remediations Vendor fix The problem is corrected in the following product versions: PPT30 Operating System 1.8.0. The OPC-UA server is not activated by default. B&R recommends that customers with the OPC-UA Server enabled to install the update at their earliest opportunity. The process to install updates is described in the user manual. The step to identify the installed product version is described in the user manual. Mitigation The optional OPC-UA server is not activated by default. The OPC-UA server shall only be activated, if required. PPT30 products are intended to operate at Levels 1 and 2 of the ABB ICS Cyber Security Reference Architecture. To restrict access to the OPC-UA server exclusively to trusted IP addresses, configure the South Firewall and/or the Control Network Firewall accordingly, and properly segment the network where the PPT30 operates. Additionally, ensure that the physical network interfaces assigned to the same logical network as the PPT30 are accessible only to authorized personnel. Refer to section “General security recommendations” for further advise on how to keep your system secure. Relevant CWE: CWE-770 Allocation of Resources Without Limits or Throttling Metrics CVSS Version Base Score Base Severity Vector String 3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C Acknowledgments ABB PSIRT reported this vulnerability to CISA. Notice The information in this document is subject to change without notice, and should not be construed as a commitment by B&R. B&R provides no warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, for the information contained in this document, and assumes no responsibility for any errors that may appear in this document. In no event shall B&R or any of its suppliers be liable for direct, indirect, special, incidental or consequential damages of any nature or kind arising from the use of this document, or from the use of any hardware or software described in this document, even if B&R or its suppliers have been advised of the possibility of such damages. This document and parts hereof must not be reproduced or copied without written permission from B&R, and the contents hereof must not be imparted to a third party nor used for any unauthorized purpose. All rights to registrations and trademarks reside with their respective owners. Frequently asked questions What causes the vulnerability? - The vulnerability is caused by insufficient handling of resources by the OPC-UA Server used by the PPT30 Operating System. What is PPT 30 Operating System - The PPT30 Operating System is the firmware required to use the B&R PPT30 hardware products. What might an attacker use the vulnerability to do? - An attacker who successfully exploited this vulnerability could cause other users are no longer able to connect to the OPC-UA server on impacted devices. How could an attacker exploit the vulnerability? - An attacker could exploit the vulnerability by sending messages to an affected system node. This would require that the attacker has access to the system network, by connecting to the network either directly or through a wrongly configured or penetrated firewall, or that he installs malicious software on a system node or otherwise infects the network with malicious software. Recommended practices help mitigate such attacks, see section Mitigating Factors above. Could the vulnerability be exploited remotely? - Yes, an attacker who has network access to an affected system node could exploit this vulnerability. Recommended practices include that process control systems are physically protected, have no direct connections to the Internet, and are separated from other networks by means of a firewall system that has a minimal number of ports exposed. When this security advisory was issued, had this vulnerability been publicly disclosed? - No, B&R discovered the vulnerabilities through its own security analysis. When this security advisory was issued, had B&R received any reports that this vulnerability was being exploited? - No, B&R had not received any information indicating that this vulnerability had been exploited when this security advisory was originally issued Legal Notice and Terms of Use This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy). Recommended Practices CISA recommends users take defensive measures to minimize the exploitation risk of these vulnerabilities. Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolate them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most recent version available. Also recognize VPN is only as secure as its connected devices. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. Advisory Conversion Disclaimer This ICSA is a verbatim republication of ABB PSIRT SA25P006 from a direct conversion of the vendor's Common Security Advisory Framework (CSAF) advisory. This is republished to CISA's website as a means of increasing visibility and is provided "as-is" for informational purposes only. CISA is not responsible for the editorial or technical accuracy of republished advisories and provides no warranties of any kind regarding any information contained within this advisory. Further, CISA does not endorse any commercial product or service. Please contact ABB PSIRT directly for any questions regarding this advisory. Revision History Initial Release Date: 2026-05-26 Date Revision Summary 2026-05-26 1 Initial version. 2026-06-04 2 Initial CISA Republication of ABB PSIRT SA25P006 advisory Legal Notice and Terms of Use

View CSAF Summary Successful exploitation of this vulnerability could allow a local attacker to gain unauthorized access to SOAP methods, resulting in a disruption of operations. The following versions of NAVTOR NavBox are affected: NavBox 4.16.1.20 (CVE-2026-21404) CVSS Vendor Equipment Vulnerabilities v3 6.3 NAVTOR NAVTOR NavBox Use of Hard-coded Credentials Background Critical Infrastructure Sectors: Information Technology Countries/Areas Deployed: Worldwide Company Headquarters Location: Norway Vulnerabilities Expand All + CVE-2026-21404 NAVTOR NavBox through version 4.16.1.20 contains hard-coded credentials within its Windows Communication Foundation (SOAP) implementation. If the SOAP functionality is enabled, a local attacker can extract credentials to bypass the intended transfer workflow. Successful authentication against the SOAP interface grants access to privileged WCF methods, enabling an attacker to write or overwrite files within application-defined paths. View CVE Details Affected Products NAVTOR NavBox Vendor: NAVTOR Product Version: NAVTOR NavBox: 4.16.1.20 Product Status: known_affected Remediations Vendor fix NAVTOR has released a patch for NavBox in April 2026. Version 4.17.2.6 and later includes the fix. Users that have an active NavBox connection will automatically be kept up to date with the latest version. No user action required. Relevant CWE: CWE-798 Use of Hard-coded Credentials Metrics CVSS Version Base Score Base Severity Vector String 3.1 6.3 MEDIUM CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H 4.0 5.8 MEDIUM CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N Acknowledgments Cydome Security Ltd reported this vulnerability to CISA Legal Notice and Terms of Use This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy). Recommended Practices CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolating them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. CISA also recommends users take the following measures to protect themselves from social engineering attacks: Do not click web links or open attachments in unsolicited email messages. Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams. Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks. No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. This vulnerability is not exploitable remotely. This vulnerability has a high attack complexity. Revision History Initial Release Date: 2026-06-04 Date Revision Summary 2026-06-04 1 Initial Publication Legal Notice and Terms of Use

CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-45247 Mirasvit Full Page Cache Warmer Deserialization of Untrusted Data Vulnerability This type of vulnerability is a frequent attack vector for malicious cyber actors and poses significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.

CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2022-0492 Linux Kernel Improper Authentication Vulnerability CVE-2025-48595 Android Framework Integer Overflow Vulnerability These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.

CISA and Partners Urge Hardening Automatic Tank Gauge Systems Overview The Cybersecurity and Infrastructure Security Agency (CISA), the Federal Bureau of Investigation (FBI), the National Security Agency (NSA), the Department of Energy (DOE), the Environmental Protection Agency (EPA), the Transportation Security Administration (TSA), the Department of Transportation (DOT), and the U.S. Department of Agriculture (USDA)—hereafter referred to as “the authoring organizations”—are aware of malicious cyber activity targeting U.S.-based automatic tank gauge (ATG) systems. ATG systems are widely used throughout the Energy, Chemical, Food and Agriculture, and Transportation Systems Sectors for automated and remote monitoring of storage tank parameters, including fuel and liquid levels, temperature, and possible leak detection. The authoring organizations urge ATG owners and operators to defend against this malicious activity by securing their ATG systems with strong passwords and by removing them from the internet to reduce public exposure. Threat The recent malicious cyber activity observed by the authoring organizations—which the U.S. government has not yet attributed to a nation-state or threat actor group—involves cyber threat actors compromising internet-exposed ATG systems and subsequently modifying them through command execution. This fact sheet provides insight into probable tactics, techniques, and procedures (TTPs) leveraged by these cyber actors, highlights risk factors associated with such compromises, and provides mitigation guidance and resources to reduce the likelihood of continued malicious activity targeting U.S.-based ATG systems. Cyber threat actors may exploit flaws in ATG systems through multiple attack vectors: Authentication Bypass and Hardcoded Credentials: Threat actors gain unauthorized access to device management interfaces. OS Command Execution and Structured Query Language (SQL) Injection: Threat actors execute arbitrary code and manipulate underlying databases. Privilege Escalation: Threat actors achieve full administrator privileges over the device application and operating system. Should a cyber threat actor exploit these vulnerabilities and compromise an ATG system, they could disrupt or manipulate the below critical functions by interfacing directly with the tank management as though they possessed legitimate physical access to the system console. The cyber threat actors could: Alter system(s) attributes, such as network settings, product identifiers, tank volumes, and pump controls; Compound operational malfunctions; components operating incorrectly could create a denial of view condition of tank fill levels, which could cause permanent damage to the tank system’s critical function; Disable system alerts, reducing an operator’s ability to detect and mitigate system issues increases the risk of environmental or physical hazards from incidents such as leaks or relay failures. Mitigations The authoring organizations recommend ATG owners immediately implement the following recommendations: Eliminate public internet exposure: Do not expose the ATG serial port (e.g., default TCP port 8001, 9001, or 10001), or other applicable web interfaces, directly to the internet. If remote access to the port is necessary, consider the following options: Restrict access: Use a firewall, access control list (ACL), or virtual private network (VPN) to restrict access. Enforce Credential Security: Change any default passwords immediately [CPG 3.A] and implement strong, unique security codes and administrative credentials for all interfaces, including the serial port. Further, implement phishing-resistant multifactor authentication wherever feasible [CPG 3.F]. If unfamiliar with these procedures, contact your ATG service provider for assistance. Apply Patches: Where possible, work with certified ATG service providers, if available, to verify compliance, update software, and apply the latest security patches from the manufacturer. Monitor and Report: Organizations should actively monitor networks for unauthorized access. Enable logging and audit and monitor logs to identify exposures of ATG device interfaces, unauthorized connections, suspicious alarms, alarm threshold modifications, tank label changes, and other system modifications [CPG 3.Q]. Report suspected incidents promptly to the CISA portal. Engage your third-party service providers to adopt CISA, FBI, EPA, and DOE’s Primary Mitigations to Reduce Cyber Threats to Operational Technology [CPG 1.E]. Resources The authoring organizations recommend ATG owners and operators review the following resources and implement suggested mitigations, where possible, to enhance their security posture. For more information on mitigating cyber threat activity targeting internet-exposed OT and ICS, see CISA, FBI, EPA, and DOE’s Primary Mitigations to Reduce Cyber Threats to Operational Technology fact sheet. For more information on vulnerabilities affecting ATG systems, see Critical Vulnerabilities Discovered in Automated Tank Gauge Systems.1 For ways to identify and remove internet-accessible assets, see CISA’s Internet Exposure Reduction Guidance web page. For more information about how organizations should design, secure, and manage connectivity in OT, see Secure connectivity principles for Operational Technology (OT). Contact Information The authoring organizations recommend U.S. organizations report suspicious or criminal activity related to information provided in this fact sheet. CISA: Contact CISA’s 24/7 Operations Center via report@cisa.gov or 888-282-0870. When available, please include the following information regarding the incident: date, time, and location of the incident; type of activity; number of people affected; type of equipment used for the activity; the name of the submitting company or organization; and a designated point of contact. For more information on reporting a cyber incident, refer to CISA’s Voluntary Cyber Incident Reporting web page. FBI: File a complaint with the Internet Crime Complaint Center (IC3) at www.ic3.gov. When available, include the following incident information: date, time, and location of the incident; type of activity; number of people affected; type of equipment used for the activity; the name of the submitting organization; and designated point of contact. EPA: Contact EPA’s Office of National Security via ONS-OC@epa.gov. DOE: Entities required to report incidents to DOE should follow established reporting requirements, as appropriate. For other energy sector inquiries, contact EnergySRMA@hq.doe.gov. Disclaimer The information in this report is being provided “as is” for informational purposes only. The authoring organizations do not endorse any commercial entity, product, company, or service, including any entities, products, or services linked within this document. Any reference to specific commercial entities, products, processes, or services by service mark, trademark, manufacturer, or otherwise, does not constitute or imply endorsement, recommendation, or favor by the authoring organizations. Notes 1 Pedro Umbelino, “Critical Vulnerabilities Discovered in Automated Tank Gauge Systems,” Bitsight, October 11, 2023, bitsight.com/blog/critical-vulnerabilities-discovered-automated-tank-gauge-systems. Please share your thoughts! We welcome your feedback. CISA PRODUCT SURVEY

CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2024-21182 Oracle WebLogic Server Unspecified Vulnerability This type of vulnerability is a frequent attack vectors for malicious cyber actors and poses significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.

CISA has added one new vulnerability to its Known Exploited Vulnerabilities (KEV) Catalog, based on evidence of active exploitation. CVE-2026-0257 Palo Alto Networks PAN-OS Authentication Bypass Vulnerability This type of vulnerability is a frequent attack vectors for malicious cyber actors and poses significant risks to the federal enterprise. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the KEV Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of KEV Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.

View CSAF Summary ABB is aware of vulnerabilities in the product versions listed as affected in the advisory. An attacker who successfully exploited this vulnerability could gain physical, unauthorized access to a Building where the product is installed The following versions of ABB Busch-Welcome 2 Wire Door Opener Actuator are affected: Switch Actuator 4 DU vers:all/* Switch actuator, door/light 4 DU vers:all/* CVSS Vendor Equipment Vulnerabilities v3 6.8 ABB ABB Busch-Welcome 2 Wire Door Opener Actuator Active Debug Code Background Critical Infrastructure Sectors: Commercial Facilities Countries/Areas Deployed: Worldwide Company Headquarters Location: Switzerland Vulnerabilities Expand All + CVE-2025-7705 Authentication bypass due to compatibility mode enabled by default View CVE Details Affected Products ABB Busch-Welcome 2 Wire Door Opener Actuator Vendor: ABB Product Version: Switch Actuator 4 DU -83330 - All Versions, Switch actuator, door/light 4 DU -83330-500 - All Versions Product Status: known_affected Remediations Mitigation The following actions need to be executed on premise where the respective Busch-Welcome® System is installed: • While the Busch-Welcome® System is in operation, toggle the mode switch on the product from “Door-Open” - to “Light” – Mode, wait one second and switch back to “Door-Open” - Mode. • Restart the Busch-Welcome® System with a Power reset (mains power off and on again). By executing the above steps, the system will recalibrate itself during boot up and will correct the misconfiguration automatically. ABB recommends that customers apply the above listed actions at the earliest convenience. Relevant CWE: CWE-489 Active Debug Code Metrics CVSS Version Base Score Base Severity Vector String 3.1 6.8 MEDIUM CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Acknowledgments ABB PSIRT reported this vulnerability to CISA. Notice The information in this document is subject to change without notice, and should not be construed as a commitment by ABB. ABB provides no warranty, express or implied, including warranties of merchantability and fitness for a particular purpose, for the information contained in this document, and assumes no responsibility for any errors that may appear in this document. In no event shall ABB or any of its suppliers be liable for direct, indirect, special, incidental or consequential damages of any nature or kind arising from the use of this document, or from the use of any hard-ware or software described in this document, even if ABB or its suppliers have been advised of the possibility of such damages. This document and parts hereof must not be reproduced or copied without written permission from ABB, and the contents hereof must not be imparted to a third party nor used for any unauthorized purpose. All rights to registrations and trademarks reside with their respective owners. Mitigating factors ABB recommends double check the system handbook of a Busch-Welcome® two wire system regarding security advises for the correct installation. Legal Notice and Terms of Use This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy). Recommended Practices CISA recommends users take defensive measures to minimize the exploitation risk of these vulnerabilities. Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolate them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most recent version available. Also recognize VPN is only as secure as its connected devices. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. Advisory Conversion Disclaimer This ICSA is a verbatim republication of ABB PSIRT 9AKK108471A4556 from a direct conversion of the vendor's Common Security Advisory Framework (CSAF) advisory. This is republished to CISA's website as a means of increasing visibility and is provided "as-is" for informational purposes only. CISA is not responsible for the editorial or technical accuracy of republished advisories and provides no warranties of any kind regarding any information contained within this advisory. Further, CISA does not endorse any commercial product or service. Please contact ABB PSIRT directly for any questions regarding this advisory. Revision History Initial Release Date: 2025-07-21 Date Revision Summary 2025-07-21 1 Initial version. 2026-05-28 2 Initial CISA Republication of ABB PSIRT 9AKK108471A4556 advisory Legal Notice and Terms of Use

View CSAF Summary Successful exploitation of this vulnerability could result in an attacker gaining administrator access to the device. The following versions of Jinan USR IOT Technology Limited (PUSR) USR-W610 RS232/485 to Wi-Fi/Ethernet Converter are affected: USR-W610 RS232/485 to Wi-Fi/Ethernet Converter 7.03T.07 CVSS Vendor Equipment Vulnerabilities v3 9.8 Jinan USR IOT Technology Limited (PUSR) Jinan USR IOT Technology Limited (PUSR) USR-W610 RS232/485 to Wi-Fi/Ethernet Converter Use of Hard-coded Credentials Background Critical Infrastructure Sectors: Critical Manufacturing Countries/Areas Deployed: Worldwide Company Headquarters Location: China Vulnerabilities Expand All + CVE-2026-7786 The device firmware contains plaintext administrative credentials embedded in the firmware image. These credentials can be extracted through firmware analysis and used to authenticate to device services. View CVE Details Affected Products Jinan USR IOT Technology Limited (PUSR) USR-W610 RS232/485 to Wi-Fi/Ethernet Converter Vendor: Jinan USR IOT Technology Limited (PUSR) Product Version: Jinan USR IOT Technology Limited (PUSR) USR-W610 RS232/485 to Wi-Fi/Ethernet Converter: 7.03T.07 Product Status: known_affected Remediations Mitigation Jinan USR IOT Technology Limited (PUSR) did not respond to CISA's attempts at coordination. Users of PUSR USR-W610 devices are encouraged to contact PUSR and keep their systems up to date. Relevant CWE: CWE-798 Use of Hard-coded Credentials Metrics CVSS Version Base Score Base Severity Vector String 3.1 9.8 CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Acknowledgments Arun Mane and Omkar Mali reported this vulnerability to CISA Legal Notice and Terms of Use This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy). Recommended Practices CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet. Locate control system networks and remote devices behind firewalls and isolating them from business networks. When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies. Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents. No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time. Revision History Initial Release Date: 2026-05-28 Date Revision Summary 2026-05-28 1 Initial Publication Legal Notice and Terms of Use