CVE-2001-1078: Extremail

High severity, CVSS 10.0. EPSS: 5.4% chance of exploitation in the next 30 days.

Format string vulnerability in flog function of eXtremail 1.1.9 and earlier allows remote attackers to gain root privileges via format specifiers in the SMTP commands (1) HELO, (2) EHLO, (3) MAIL FROM, or (4) RCPT TO, and the POP3 commands (5) USER and (6) other commands that can be executed after POP3 authentication.

Affected products

• Extremail Extremail: version 1.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.3 only; version 1.1 only; version 1.1.1 only; …

Published 2001-06-21. Last modified 2026-06-16.