Vulnerability in Hitachi Energy RTU500 series CMU firmware

[ Description ]Official description

An improper authorization vulnerability in the end-of-life versions of RTU500’s web application allows an authenticated user to trigger the RTU500 to reboot through the reset endpoint. Successful exploitation could cause temporary device unavailability and disruption of its intended operation.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund29 Sep 2026WID-SEC-2026-3658

  Hitachi Energy RTU500: Multiple vulnerabilities Translated from German

  CVE-2023-46143CVE-2010-2965CVE-2026-8065+3 more CVEs

[ References ]References

• publisher.hitachienergy.com/preview