Vulnerability · Published Dec 12, 2025 · Assigned by mitre

CVE-2025-66430

Critical 9.1

In plain English

A critical-severity improper access control in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 46% of all known vulnerabilities).

Severity (CVSS 3.1)9.1Critical

Exploit odds (30 days)0.6%top 53.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Plesk 18.0 has Incorrect Access Control.

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

References

https://docs.plesk.com/release-notes/obsidian/whats-new/
https://support.plesk.com/hc/en-us/articles/36261922405015--CVE-2025-66430-Security-vulnerability-in-Password-Protected-Directories-allows-Plesk-users-to-gain-root-level-access-to-a-Plesk-server