ABB B&R PVI

View CSAF Summary ABB became aware of vulnerability in the product versions listed as affected in the advisory. An update is now available that addresses and remediates the vulnerability. An attacker who successfully exploited this vulnerability could read sensitive information in the logging data of the PVI client application. Logging is deactivated by default in all PVI client versions. The following versions of ABB B&R PVI are affected: PVI <6.5.0, 6.5.0 (CVE-2026-0936) CVSS Vendor Equipment Vulnerabilities

v3 5 ABB ABB B&R PVI Insertion of Sensitive Information into Log File

Background Critical Infrastructure Sectors: Energy Countries/Areas Deployed: Worldwide Company Headquarters Location: Switzerland Vulnerabilities Expand All + CVE-2026-0936 An Insertion of Sensitive Information into Log File vulnerability in B&R PVI client versions prior to 6.5 may be abused by an authenticated local attacker to gather credential information which is processed by the PVI client application. The logging function of the PVI client application is disabled by default and must be explicitly enabled by the user. View CVE Details Affected Products ABB B&R PVI Vendor: ABB Product Version: ABB PVI <6.5.0 Product Status: fixed, known_affected Remediations Vendor fix The problem is corrected in the following product versions: - PVI 6.5.0 Please note that PVI is included in the Automation Studio installation package and shares the same version number as the corresponding Automation Studio release. B&R recommends that customers apply the update at earliest convenience. 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 This vulnerability is limited to the PVI client side application logging and does not impact any security related logging of the PVI server component. Logging is not enabled by default for PVI client applications. Activate logging on the client system only when it is required for troubleshooting, debugging or analysis. Ensure that all client side logging information is securely deleted after it is no longer needed. When enabling logging in PVI client applications, the storage path for the log files must be specified. Make sure that only the respective user has access to the directories where the logging information is stored. Refer to section “General security recommendations” for further advise on how to keep your system secure. Relevant CWE: CWE-532 Insertion of Sensitive Information into Log File Metrics CVSS Version Base Score Base Severity Vector String

3.1 5 MEDIUM CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N/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. 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 SA26P001 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: 2026-01-29 Date Revision Summary

2026-01-29 1 Initial version.

2026-05-05 2 Initial CISA Republication of ABB PSIRT SA26P001 advisory

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Source: CISA Alerts