ABB Freelance Security Lock Bypass via Keyboard Shortcut
CVE-2025-7064 reveals a fundamental flaw in ABB Freelance Security Lock, where special keyboard combinations can be used to bypass the security lock and access underlying operating system functions. This type of vulnerability is particularly dangerous in critical manufacturing environments, where HMI (Human-Machine Interface) kiosk-mode lockdowns are expected to be the primary barrier preventing unauthorized OS-level access. The root issue stems from inadequate input validation and hardening of the locked-down interface, allowing local or physical attackers to escape the restricted environment entirely. In industrial control system (ICS) contexts, even brief unauthorized OS access can lead to configuration tampering, malware installation, or full process disruption. ABB's advisory underscores that no security lock mechanism should be treated as a standalone control without defense-in-depth.
Tactical Insight
Immediate actions
- Apply ABB's security advisory mitigations or upgrade affected Freelance Security Lock versions to a patched release immediately.
- Physically restrict access to affected HMI terminals to authorized personnel only, using locked enclosures or supervised areas.
- Disable or block unused keyboard shortcuts and special key combinations at the OS level where technically feasible.
Long-term improvements
- Implement layered kiosk hardening by combining application whitelisting, OS-level restrictions (e.g., Group Policy), and physical keyboard controls rather than relying solely on the security lock software.
- Maintain a comprehensive inventory of all ICS/OT software versions and integrate them into a continuous vulnerability management program.
- Segment OT networks so that even if an HMI terminal is compromised, lateral movement to critical control systems is restricted.
Detection measures
- Deploy endpoint monitoring or SIEM rules on HMI systems to alert on unexpected process launches or OS-level activity outside normal operational parameters.
- Conduct regular penetration testing and physical security assessments of HMI and operator terminals in industrial environments.
- Establish an audit logging baseline for all interactive sessions on Freelance Security Lock systems to detect anomalous access patterns.