9.1
Critical
CVE-2026-8065 An authentication bypass vulnerability in the firmware update endpoint of Hitachi Energy RTU500 end-of-life versions…
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| RTU500 series CMU Firmware 9.0 | 9.0 → < 12.0 | 12.0 |
Other CVEs of RTU500 series CMU Firmware
The 13 CVEs of RTU500 series CMU Firmware →
CVE-2026-8067
An improper authorization vulnerability in the end-of-life versions of RTU500’s web application allows an…
6.5
Medium
CVE-2026-8066
A directory traversal vulnerability in the file upload functionality of Hitachi Energy RTU500 end-of-life versions…
9.1
Critical
CVE-2026-17539
RTU500 has a vulnerability, where high-load scenarios, such as sending GI requests at short intervals, may cause a…
5.9
Medium
CVE-2026-8479
IEC 60870-5-104 used in bidirectional mode in RTU500 is vulnerable for a NULL pointer dereferencing, if a specially…
6.9
Medium