CVE-2026-8066

Name of the Vulnerable Software and Affected Versions Hitachi Energy RTU500 end-of-life versions

Description A directory traversal issue exists in the file upload functionality. This allows an unauthenticated attacker to write or overwrite arbitrary files on the device file system. Successful exploitation may lead to unauthorized modification of device data or disruption of the device's intended operation. Directory traversal is a flaw that allows an attacker to access and manipulate files outside the intended directory.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.