CVE-2005-4348: Fetchmail

High severity, CVSS 7.8. EPSS: 3.6% chance of exploitation in the next 30 days.

fetchmail before 6.3.1 and before 6.2.5.5, when configured for multidrop mode, allows remote attackers to cause a denial of service (application crash) by sending messages without headers from upstream mail servers.

Affected products

• Fetchmail Fetchmail: from 6.2.0, before 6.2.5.5 (fixed in 6.2.5.5); from 6.3.0, before 6.3.1 (fixed in 6.3.1)

Published 2005-12-21. Last modified 2026-06-16.