CVE-2008-5618: Rsyslog

Medium severity, CVSS 5.0. EPSS: 1.2% chance of exploitation in the next 30 days.

imudp in rsyslog 4.x before 4.1.2, 3.21 before 3.21.9 beta, and 3.20 before 3.20.2 generates a message even when it is sent by an unauthorized sender, which allows remote attackers to cause a denial of service (disk consumption) via a large number of spurious messages.

Affected products

• Rsyslog Rsyslog: version 3.12.1 only; version 3.20.0 only; version 4.1.0 only; version 4.1.1 only

Published 2008-12-17. Last modified 2026-06-16.