CVE-2025-54336

CRITICAL EPSS 37.5%
Published Aug 19, 202510mo ago · Modified Jun 17, 20262w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Aug 19, 2025 10mo ago
Last Modified Jun 17, 2026 2w ago

Description

In Plesk Obsidian 18.0.70, _isAdminPasswordValid uses an == comparison. Thus, if the correct password is "0e" followed by any digit string, then an attacker can login with any other string that evaluates to 0.0 (such as the 0e0 string). This occurs in admin/plib/LoginManager.php.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
37.5% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-697

References 3

  • blog.aziz.tn https://blog.aziz.tn/2025/08/cve-2025-54336.html/
  • support.plesk.com https://support.plesk.com/hc/en-us/articles/33785727869847-Vulnerability-CVE-2025-54336
  • plesk.com https://www.plesk.com/blog/plesk-news-announcements/introducing-plesk-obsidian-18-0-70-anniversary-edition/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.