CVE-2026-59241 Privilege escalation in SIMATIC WinCC V7.5
An authenticated attacker with database access can escalate privileges and execute arbitrary commands on the host system running SIMATIC WinCC.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-59241?
CVE-2026-59241 is a high-severity vulnerability in Siemens SIMATIC WinCC V7.5, published on 13 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been identified in SIMATIC WinCC V7.5 (All versions), SIMATIC WinCC V8.0 (All versions < V8.0 Update 11), SIMATIC WinCC V8.1 (All versions < V8.1 Update 7). The affected application does not sufficiently restrict the permissions assigned to a database role. This could allow an authenticated remote attacker with database access to escalate privileges and execute arbitrary commands on the host system where SIMATIC WinCC is installed, potentially leading to a compromise of the system.
Weakness: CWE-266
Which versions are affected by CVE-2026-59241?
How do I fix CVE-2026-59241?
No fix has been published for CVE-2026-59241 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-59241 being exploited?
There is no known exploitation of CVE-2026-59241 in the wild and no public exploit code.
Sources
Also known as GHSA-q747-5rxh-c5w7.