Vulnerability · Published Jun 9, 2026 · Assigned by siemens
CVE-2026-24349
High 7.1
In plain English
A high-severity security flaw in SIMATIC WinCC Unified PC Runtime V16 from Siemens. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 0% of all known vulnerabilities).
Official description
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 (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Siemens | SIMATIC WinCC Unified PC Runtime V16 | 0 – before * |
| Siemens | SIMATIC WinCC Unified PC Runtime V17 | 0 – before * |
| Siemens | SIMATIC WinCC Unified PC Runtime V18 | 0 – before * |
| Siemens | SIMATIC WinCC Unified PC Runtime V19 | 0 – before * |
| Siemens | SIMATIC WinCC Unified PC Runtime V20 | 0 – before * |
| Siemens | SIMATIC WinCC Unified PC Runtime V21 | 0 – before V21 Update 2 |
Weakness: CWE-313 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N