CVE-2023-28829: Siemens SIMATIC Net Pc Software

High severity, CVSS 8.8. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Siemens SIMATIC Net Pc Software: version 14.0 only; version 15.0 only
• Siemens SIMATIC Pcs 7: version 8.2 only; version 9.0 only; version 9.1 only
• Siemens SIMATIC Wincc: before 8.0 (fixed in 8.0)
• Siemens Sinaut ST7SC: any version

Published 2023-06-13. Last modified 2026-06-17.