CVE-2025-66431 Privilege escalation in Plesk
Authenticated users with domain management permissions can execute arbitrary code as root via domain creation in Plesk.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-66431?
CVE-2025-66431 is a high-severity vulnerability in Plesk, published on 3 Dec 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
WebPros Plesk before 18.0.73.5 and 18.0.74 before 18.0.74.2 on Linux allows remote authenticated users to execute arbitrary code as root via domain creation. The attacker needs "Create and manage sites" with "Domains management" and "Subdomains management."
Weakness: CWE-61
Which versions are affected by CVE-2025-66431?
How do I fix CVE-2025-66431?
No fix has been published for CVE-2025-66431 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-66431 being exploited?
There is no known exploitation of CVE-2025-66431 in the wild and no public exploit code.
Sources
Also known as GHSA-mp85-3986-vf9p.