What is CVE-2026-8067?

CVE-2026-8067 is a medium-severity vulnerability in Hitachi Energy Rtu500 Series Cmu Firmware, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-09-29.

How severe is CVE-2026-8067?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Auth bypass in Hitachi Energy Rtu500 Series Cmu Firmware

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 exploitation could cause temporary device unavailability and disruption of its intended operation.

Vulnerability class: Broken Access Control

Published 2026-09-29 · last modified 2026-09-29.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Hitachi Energy Rtu500 Series Cmu Firmware

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

publisher.hitachienergy.com/preview

Frequently asked questions

What is CVE-2026-8067?: CVE-2026-8067 is a medium-severity vulnerability in Hitachi Energy Rtu500 Series Cmu Firmware, classified under Missing Authorization. CVSS score: 6.5/10. Published 2026-09-29.
How severe is CVE-2026-8067?: Medium severity. CVSS v3 base score is 6.5 out of 10.