[Control systems] ABB security advisory (AV26-232)

Serial number: AV26-232
Date: March 12, 2026

On March 12, 2026, ABB published a security advisory to address a vulnerability in the following product:

• AC500 V3 – firmware version 3.9.0

The Cyber Centre encourages users and administrators to review the provided web links and perform the suggested mitigations.

• AC500 V3 Stack buffer overflow in Cryptographic Message Syntax (CVE-2025-15467) (PDF)
• ABB Cyber security alerts and notifications