Critical severity9.1NVD Advisory· Published Sep 29, 2026

CVE-2026-8065

Description

An authentication bypass vulnerability in the firmware update endpoint of Hitachi Energy RTU500 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.

Affected products

Hitachi/RTU500llm-create

Patches

Vulnerability mechanics

References

publisher.hitachienergy.com/previewnvd

News mentions

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epss	0.000
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ransomware	0.000