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.
References (3)
Core 3
Core References
Various Sources
https://blog.aziz.tn/2025/08/cve-2025-54336.html/
Scores
CVSS v3
9.8
EPSS
0.0047
EPSS Percentile
37.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
total
Details
CWE
CWE-697
Status
published
Published
Aug 19, 2025
Tracked Since
Feb 18, 2026