CVE-2001-0894: Wietse Venema Postfix

Medium severity, CVSS 5.0. EPSS: 1.9% chance of exploitation in the next 30 days.

Vulnerability in Postfix SMTP server before 20010228-pl07, when configured to email the postmaster when SMTP errors cause the session to terminate, allows remote attackers to cause a denial of service (memory exhaustion) by generating a large number of SMTP errors, which forces the SMTP session log to grow too large.

Affected products

• Wietse Venema Postfix: version 1999-09-06 only; version 1999-12-31 only; version 2000-02-28 only

Published 2001-11-11. Last modified 2026-06-16.