[Control systems] ABB security advisory (AV25-450)

Serial number: AV25-450
Date: July 24, 2025

On July 23, 2025, ABB published a security advisory to address a vulnerability in the following product:

• AC500 V2 PLCs – firmware versions 2.5.2 and prior

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

• AC500 V2 Buffer overread on Modbus protocol - CVE ID: CVE-2025-7745
• ABB Cyber security alerts and notifications