A directory traversal vulnerability in the file upload functionality of Hitachi Energy RTU500 end-of-life versions allows an unauthenticated attacker to write or overwrite arbitrary files on the device file system. Depending on the files affected, successful exploitation could result in unauthorized modification of device data or disruption of the device’s intended operation.

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Fixes

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Workaround

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History

Tue, 29 Sep 2026 18:00:00 +0000

Type Values Removed Values Added
Title Directory Traversal Allowing Arbitrary File Write in Hitachi Energy RTU500 Firmware

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

Type Values Removed Values Added
Description A directory traversal vulnerability in the file upload functionality of Hitachi Energy RTU500 end-of-life versions allows an unauthenticated attacker to write or overwrite arbitrary files on the device file system. Depending on the files affected, successful exploitation could result in unauthorized modification of device data or disruption of the device’s intended operation.
Weaknesses CWE-23
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: 2026-09-29T15:52:33.807Z

Reserved: 2026-05-07T05:51:57.867Z

Link: CVE-2026-8066

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-29T10:17:13.250

Modified: 2026-09-29T21:39:02.570

Link: CVE-2026-8066

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-29T17:45:17Z

Weaknesses