CVE-2005-1523: GNU Mailutils

High severity, CVSS 7.5. EPSS: 9.8% chance of exploitation in the next 30 days.

Format string vulnerability in imap4d server in GNU Mailutils 0.5 and 0.6, and other versions before 0.6.90, allows remote attackers to execute arbitrary code via format string specifiers in the command tag for IMAP commands.

Affected products

• GNU Mailutils: version 0.5 only; version 0.6 only

Published 2005-05-26. Last modified 2026-06-16.