Description
An XXE vulnerability has been identified in OPC Foundation UA .NET Sample Code before 2017-03-21 and Local Discovery Server (LDS) before 1.03.367. Among the affected products are Siemens SIMATIC PCS7 (All versions V8.1 and earlier), SIMATIC WinCC (All versions < V7.4 SP1), SIMATIC WinCC Runtime Professional (All versions < V14 SP1), SIMATIC NET PC Software, and SIMATIC IT Production Suite. By sending specially crafted packets to the OPC Discovery Server at port 4840/tcp, an attacker might cause the system to access various resources chosen by the attacker.
Advisories 2
- ICSA-17-243-01 Siemens OPC UA Protocol Stack Discovery Service (Update E) CISA ICS & IT advisories · May 6, 2025
- SSA-535640 SSA-535640: Vulnerability in Industrial Products Siemens ProductCERT · Apr 12, 2022