Serial number: AV26-545
Date: June 3, 2026
On June 3, 2026, ABB published a security advisory to address vulnerabilities in the following product:
- T-MAC Plus – versions prior to 4.0-24.
The Cyber Centre encourages users and administrators to review the provided web links and perform the suggested mitigations.
![[Control systems] ABB security advisory (AV26-545)](https://canadiancyberwatch.ca/wp-content/uploads/2026/03/cyber-open-graph-1024x538.jpg)