All vulnerabilities
CVE-2026-8067

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 expl

Hitachi Energy RTU500 series CMU firmware
Open in ThreatlineRecord JSON
CVSS
6.5Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.32%Chance of exploitation activity in the next 30 days, higher than 24% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in12.0Fixed versionCVE List
Published29 Sep 2026Updated 29 Sep 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List

Affected versions 1

  • RTU500 series CMU firmwareaffected: 9.0 before 12.0CVE List

References 1