CVE-2025-40759 | Siemens TIA Portal Cloud V20 Project File Parser deserialization (ssa-493396)
A vulnerability, which was classified as critical, was found in Siemens SIMATIC S7-PLCSIM V17, SIMATIC STEP 7 V17, SIMATIC STEP 7 V18, SIMATIC STEP 7 V19, SIMATIC STEP 7 V20, SIMATIC WinCC V17, SIMATIC WinCC V18, SIMATIC WinCC V19, SIMATIC WinCC V20, SIMOCODE ES V17, SIMOCODE ES V18, SIMOCODE ES V19, SIMOCODE ES V20, SIMOTION SCOUT TIA V5.4, SIMOTION SCOUT TIA V5.5, SIMOTION SCOUT TIA V5.6, SIMOTION SCOUT TIA V5.7, SINAMICS Startdrive V17, SINAMICS Startdrive V18, SINAMICS Startdrive V19, SINAMICS Startdrive V20, SIRIUS Safety ES V17, SIRIUS Safety ES V18, SIRIUS Safety ES V19, SIRIUS Safety ES V20, SIRIUS Soft Starter ES V17, SIRIUS Soft Starter ES V18, SIRIUS Soft Starter ES V19, SIRIUS Soft Starter ES V20, TIA Portal Cloud V17, TIA Portal Cloud V18, TIA Portal Cloud V19 and TIA Portal Cloud V20. Affected is an unknown function of the component Project File Parser. Such manipulation leads to deserialization.
This vulnerability is listed as CVE-2025-40759. The attack may be performed from remote. There is no available exploit.
You should upgrade the affected component.