What is the CVSS score of CVE-2025-66431?

CVE-2025-66431 has a CVSS 3.1 base score of 7.8 (High). CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H. EPSS exploitation probability: 0.1%.

Which versions of WebPros Plesk are affected by CVE-2025-66431?

CVE-2025-66431 is a high-severity remote code execution vulnerability affecting WebPros Plesk versions 18.0.73.5 and 18.0.74 before 18.0.74.2 on Linux systems.. A patch is available.

How to fix or mitigate CVE-2025-66431?

Within 24 hours: Identify all Plesk installations running versions 18.0.73.5 or 18.0.74.x before 18.0.74.2 on Linux and document current inventory. Within 7 days: Apply vendor-released patches-upgrade to Plesk 18.0.73.6 or later, and Plesk 18.0.74.2 or later depending on deployed version. Within 30 days: Verify patch deployment across all instances, validate functionality post-upgrade, and review access logs for suspicious authenticated activity during the vulnerability window.

WebPros Plesk CVE-2025-66431

EUVD-2025-200986 HIGH

UNIX Symbolic Link (Symlink) Following (CWE-61)

2025-12-03 cve@mitre.org

RCE

7.8

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

7.8 HIGH

AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Lifecycle Timeline

Analysis Updated

Apr 16, 2026 - 06:24 EUVD-patch-fix

executive_summary

Re-analysis Queued

Apr 16, 2026 - 05:29 backfill_euvd_patch

patch_released

Patch available

Apr 16, 2026 - 05:29 EUVD

18.0.73.5,18.0.74.2

EUVD ID Assigned

Mar 15, 2026 - 16:14 euvd

EUVD-2025-200986

Analysis Generated

Mar 15, 2026 - 16:14 vuln.today

CVE Published

Dec 03, 2025 - 17:15 nvd

HIGH 7.8

DescriptionCVE.org

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."

AnalysisAI

A remote code execution vulnerability in WebPros Plesk before 18.0.73.5 and 18.0.74 before 18.0.74.2 on Linux (CVSS 7.8) that allows remote authenticated users. High severity vulnerability requiring prompt remediation.

Technical ContextAI

Vulnerability type: remote code execution. CVSS 7.8 indicates high severity. Affects WebPros Plesk before 18.0.73.5 and 18.0.74 before 18.0.74.2 on Linux.