CVE-2025-54336

CVSS 9.8 CRITICALEPSS 0.5%CWE-697

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.8EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

19 Aug 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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

Affected products

n/a · n/a

Want to know if your infrastructure is exposed to this?

Talk to TrueHacking →

References

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