CVE-2007-4411: Universal Ircd Ircu

Medium severity, CVSS 4.3. EPSS: 1.2% chance of exploitation in the next 30 days.

ircu 2.10.12.05 and earlier allows remote attackers to discover the hidden IP address of arbitrary +x users via a series of /silence commands with (1) CIDR mask arguments or (2) certain other arguments that represent groups of IP addresses, then monitoring CTCP ping replies.

Affected products

• Universal Ircd Ircu: up to and including 2.10.12.05

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