CVE-2004-0925: Apple Mac OS X

Medium severity, CVSS 5.0. EPSS: 1.1% chance of exploitation in the next 30 days.

Postfix on Mac OS X 10.3.x through 10.3.5, with SMTPD AUTH enabled, does not properly clear the username between authentication attempts, which allows users with the longest username to prevent other valid users from being able to authenticate.

Affected products

• Apple Mac OS X: version 10.3 only; version 10.3.1 only; version 10.3.2 only; version 10.3.3 only; version 10.3.4 only; version 10.3.5 only
• Apple Mac OS X Server: version 10.3 only; version 10.3.1 only; version 10.3.2 only; version 10.3.3 only; version 10.3.4 only; version 10.3.5 only

Published 2005-01-27. Last modified 2026-06-16.