ABB Ability OPTIMAX

Summary

CISA disclosed CVE-2025-14510, a high-severity (CVSS 8.1) authentication bypass vulnerability in ABB Ability OPTIMAX affecting versions 6.1–6.4, where incorrect implementation of Azure Active Directory Single Sign-On integration allows attackers to bypass user authentication. The vulnerability impacts critical infrastructure systems in energy and water/wastewater sectors worldwide. Patches are available for versions 6.3.1-251120 and 6.4.1-251120; versions 6.1 and 6.2 are end-of-life.

Full text

ICS Advisory ABB Ability OPTIMAX Release DateApril 30, 2026 Alert CodeICSA-26-120-04 Related topics: Industrial Control System Vulnerabilities, Industrial Control Systems View CSAF Summary Successful exploitation of this vulnerability could allow an attacker to bypass user authentication on OPTIMAX installations that make use of the Azure Active Directory Single-Sign On integration. The following versions of ABB Ability OPTIMAX are affected: ABB Ability OPTIMAX 6.1 vers:all/* ABB Ability OPTIMAX 6.2 vers:all/* ABB Ability OPTIMAX 6.3 <6.3.1-251120 ABB Ability OPTIMAX 6.4 <6.4.1-251120 CVSS Vendor Equipment Vulnerabilities v3 8.1 ABB ABB Ability OPTIMAX Incorrect Implementation of Authentication Algorithm Background Critical Infrastructure Sectors: Energy, Water and Wastewater Countries/Areas Deployed: Worldwide Company Headquarters Location: Switzerland Vulnerabilities Expand All + CVE-2025-14510 The vulnerability allows an attacker to bypass user authentication on OPTIMAX installations that make use of the Azure Active Directory Single-Sign On integration. View CVE Details Affected Products ABB Ability OPTIMAX Vendor:ABB Product Version:ABB ABB Ability OPTIMAX 6.1: vers:all/*, ABB ABB Ability OPTIMAX 6.2: vers:all/*, ABB ABB Ability OPTIMAX 6.3: <6.3.1-251120, ABB ABB Ability OPTIMAX 6.4: <6.4.1-251120 Product Status:known_affected Remediations MitigationThe following product versions have been fixed: Ability OPTIMAX 6.3 6.3.1-251120 is a fixed version for CVE-2025-14510 MitigationFor more information see the associated ABB PSIRT security advisory 9AKK108472A1331 ABB CYBERSECURITY ADVISORY - PDF Version (https://search.abb.com/library/Download.aspx?DocumentID=9AKK108472A1331&LanguageCode=en&DocumentPartId=&Action=Launch), ABB CYBERSECURITY ADVISORY - CSAF Version (https://psirt.abb.com/csaf/2026/9akk108472a1331.json).https://search.abb.com/library/Download.aspx?DocumentID=9AKK108472A1331&LanguageCode=en&DocumentPartId=&Action=Launch MitigationFor more information see the associated ABB PSIRT security advisory 9AKK108472A1331 ABB CYBERSECURITY ADVISORY - PDF Version (https://search.abb.com/library/Download.aspx?DocumentID=9AKK108472A1331&LanguageCode=en&DocumentPartId=&Action=Launch), ABB CYBERSECURITY ADVISORY - CSAF Version (https://psirt.abb.com/csaf/2026/9akk108472a1331.json).https://psirt.abb.com/csaf/2026/9akk108472a1331.json Relevant CWE: CWE-303 Incorrect Implementation of Authentication Algorithm Metrics CVSS Version Base Score Base Severity Vector String 3.1 8.1 HIGH CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Acknowledgments ABB PSIRT 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). Recognize VPNs may have vulnerabilities, should be updated to the most recent version available, and are 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. 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. 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 has a high attack complexity. Revision History Initial Release Date: 2026-04-30 Date Revision Summary 2026-04-30 1 Initial Republication of ABB PSIRT 9AKK108472A1331 Legal Notice and Terms of Use This product is provided subject to this Notification and this Privacy & Use policy. Vendor ABB Tags Sector: Energy Sector, Water and Wastewater Systems Topics: Industrial Control System Vulnerabilities, Industrial Control Systems Please share your thoughts We recently updated our anonymous product survey; we welcome your feedback. Related Advisories Apr 30, 2026 ICS Advisory | ICSA-26-120-06 ABB Ability Symphony Plus Engineering Apr 30, 2026 ICS Advisory | ICSA-26-120-05 ABB AWIN Gateways Apr 30, 2026 ICS Advisory | ICSA-26-120-03 ABB Edgenius Management Portal Apr 30, 2026 ICS Advisory | ICSA-26-120-02 ABB PCM600

Indicators of Compromise

• cve — CVE-2025-14510

Entities