CVE-2026-8065
- State
- Published
- Severity
- 9.1 Critical
- Published
- Sep 29, 2026
- Updated
- Sep 29, 2026
- Reserved
- May 7, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.1 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H | Hitachi Energy |
Weaknesses
- CWE-306 Missing authentication for critical function
Affected Products
| Product | Versions |
|---|---|
RTU500 series CMU firmwareHitachi Energy |
|
References
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