CVE-2005-4448: Flatnuke

High severity, CVSS 10.0. EPSS: 2.8% chance of exploitation in the next 30 days.

FlatNuke 2.5.6 verifies authentication credentials based on an MD5 checksum of the admin name and the hashed password rather than the plaintext password, which allows attackers to gain privileges by obtaining the password hash (possibly via CVE-2005-2813), then calculating the credentials and including them in the secid cookie.

Affected products

• Flatnuke Flatnuke: version 2.5.6 only

Published 2005-12-21. Last modified 2026-06-16.