[Control systems] Hitachi security advisory (AV26-975)

Serial number: AV26-975
Date: September 29, 2026

As of September 29, 2026, Hitachi is affected by vulnerabilities in the following product:

• RTU500 series CMU firmware
  • Prior to 12.7.8, 13.9.1 or later

The Cyber Centre encourages users and administrators to review the provided web links and apply any necessary updates as they become available.

• Vulnerabilities in Hitachi Energy RTU500 End-of-Life versions (PDF)
• Hitachi Vulnerability Information