CVE-2026-8065 (GCVE-0-2026-8065)

Vulnerability from cvelistv5 – Published: 2026-09-29 09:20 – Updated: 2026-09-29 15:54
VLAI
Summary
An authentication bypass vulnerability in the firmware update endpoint of Hitachi Energy RTU500 end-of-life versions allows an unauthenticated attacker to upload arbitrary firmware through a crafted POST request. Successful exploitation could allow the attacker to modify device functionality or compromise the integrity or availability of the device.
Severity
9.1 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-29 15:53 UTC
CWE
  • CWE-306 - Missing authentication for critical function
Assigner
References
Impacted products
Vendor Product Version CPE status
Hitachi Energy RTU500 series CMU firmware Affected: 9.0 , < 12.0 (custom)
guessed Create a notification for this product.
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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