CVE-2026-24349: Siemens SIMATIC Wincc Unified Pc Runtime

High severity, CVSS 7.1. EPSS: 0.1% chance of exploitation in the next 30 days.

A vulnerability has been identified in SIMATIC WinCC Unified PC Runtime V16 (All versions), SIMATIC WinCC Unified PC Runtime V17 (All versions), SIMATIC WinCC Unified PC Runtime V18 (All versions), SIMATIC WinCC Unified PC Runtime V19 (All versions), SIMATIC WinCC Unified PC Runtime V20 (All versions), SIMATIC WinCC Unified PC Runtime V21 (All versions < V21 Update 2). Insufficient protection of key material in WinCC Certificate Manager that could allow an attacker to extract sensitive information.

Affected products

• Siemens SIMATIC Wincc Unified Pc Runtime: from 16, up to and including 20; version 21 only

Published 2026-06-09. Last modified 2026-07-23.