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.

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History

Tue, 29 Sep 2026 13:15:00 +0000

Type Values Removed Values Added
Description 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.
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: Hitachi Energy

Published:

Updated: 2026-09-29T15:54:11.550Z

Reserved: 2026-05-07T05:51:56.353Z

Link: CVE-2026-8065

cve-icon Vulnrichment

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cve-icon NVD

Status : Received

Published: 2026-09-29T10:17:13.110

Modified: 2026-09-29T13:17:53.130

Link: CVE-2026-8065

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses