# ABB Automation Builder user management bypass via project file manipulation

Published: 2026-05-21 · Severity: routine · Sectors: energy, infrastructure
Canonical: https://vorant.io/reports/57a7544b-9b0c-5be7-8666-f42bd379e999/abb-automation-builder-user-management-bypass-via-project-file-manipulation

> Two vulnerabilities in ABB Automation Builder up to version 2.8.0 allow attackers with file access to bypass user management controls.

ABB has disclosed two vulnerabilities affecting Automation Builder version 2.8.0 and earlier that permit attackers with access to project files to override user management protections. CVE-2025-3394 allows modification of project files to bypass user management despite encrypted password storage; CVE-2025-3395 affects projects using AC500 V2 or SM560-S devices and similarly permits overriding user management through file manipulation. Both vulnerabilities require file-level access to the Automation Builder project and are rooted in improper permission assignment for critical resources. ABB has issued workarounds: enabling "Integrity check" in project security settings mitigates CVE-2025-3394 by preventing unauthorized access or modification; enabling "Encryption" mitigates CVE-2025-3395 by preventing unauthorized project access. Version 2.8.1, scheduled for July 2025, will set "Integrity check" as the default security setting. No evidence of active exploitation in the wild is documented in this advisory.

## Mentioned in this report

- Vulnerabilities: CVE-2025-3394, CVE-2025-3395

Source reporting: https://www.cisa.gov/news-events/ics-advisories/icsa-25-133-04

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