CVE-2007-4405: Universal Ircd Ircu

High severity, CVSS 7.8. EPSS: 1.7% chance of exploitation in the next 30 days.

ircu 2.10.12.02 through 2.10.12.04 allows remote attackers to cause a denial of service (memory and bandwidth consumption) by creating a large number of unused channels (zannels).

Affected products

• Universal Ircd Ircu: version 2.10.12.02 only; version 2.10.12.03 only; version 2.10.12.04 only

Published 2007-08-18. Last modified 2026-06-16.