CVE-2000-1033: Cat Soft Serv-U

High severity, CVSS 7.5. EPSS: 7.6% chance of exploitation in the next 30 days.

Serv-U FTP Server allows remote attackers to bypass its anti-hammering feature by first logging on as a valid user (possibly anonymous) and then attempting to guess the passwords of other users.

Affected products

• Cat Soft Serv-U: version 2.5x only

Published 2000-12-11. Last modified 2026-09-23.