CVE-2026-54800 | Siemens CPCI85 Central Processing-Communication OPC UA Security improper authorization

A vulnerability was found in Siemens CPCI85 Central Processing-Communication and SICORE Base system. It has been declared as very critical. The impacted element is an unknown function of the component OPC UA Security Handler. The manipulation results in improper authorization.

This vulnerability was named CVE-2026-54800. The attack may be performed from remote. There is no available exploit.