CVE-2026-24349 Information disclosure in SIMATIC WinCC Unified PC Runtime V16
An attacker can extract sensitive key material from the WinCC Certificate Manager due to insufficient protection, leading to information disclosure.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-24349?
CVE-2026-24349 is a high-severity vulnerability in Siemens SIMATIC WinCC Unified PC Runtime V16, published on 9 Jun 2026. It can only be exploited from the same machine or local network, with no action from the victim.
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.
Weakness: CWE-313
Which versions are affected by CVE-2026-24349?
It affects 1 product.
Products include Siemens Simatic Wincc Unified Pc Runtime.
How do I fix CVE-2026-24349?
No fix has been published for CVE-2026-24349 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-24349 being exploited?
There is no known exploitation of CVE-2026-24349 in the wild and no public exploit code.
Sources
Also known as GHSA-vxrh-p77g-j346.