A vulnerability has been identified in SIMATIC NET PC Software V14 (All versions), SIMATIC NET PC Software V15 (All versions), SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions), SIMATIC PCS 7 V9.1 (All versions), SIMATIC WinCC (All versions < V8.0), SINAUT Software ST7sc (All versions). Before SIMATIC WinCC V8, legacy OPC services (OPC DA (Data Access), OPC HDA (Historical Data Access), and OPC AE (Alarms & Events)) were used per default. These services were designed on top of the Windows ActiveX and DCOM mechanisms and do not implement state-of-the-art security mechanisms for authentication and encryption of contents.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://cert-portal.siemens.com/productcert/pdf/ssa-508677.pdf Patch, Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-508677.pdf Patch, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.8 · siemensNVD modified 2026-10-23 23:10
Affected (CPE criteria) 7
cpe:2.3:a:siemens:simatic_net_pc_software:14.0:*:*:*:*:*:*:*cpe:2.3:a:siemens:simatic_net_pc_software:15.0:*:*:*:*:*:*:*cpe:2.3:a:siemens:simatic_pcs_7:8.2:-:*:*:*:*:*:*cpe:2.3:a:siemens:simatic_pcs_7:9.0:-:*:*:*:*:*:*cpe:2.3:a:siemens:simatic_pcs_7:9.1:-:*:*:*:*:*:*cpe:2.3:a:siemens:simatic_wincc:*:*:*:*:*:*:*:*cpe:2.3:a:siemens:sinaut_st7sc:*:*:*:*:*:*:*:*
References 2
- https://cert-portal.siemens.com/productcert/pdf/ssa-508677.pdf Patch, Vendor Advisory
- https://cert-portal.siemens.com/productcert/pdf/ssa-508677.pdf Patch, Vendor Advisory