CVE-2010-1156: Irssi

Medium severity, CVSS 4.3. EPSS: 2.9% chance of exploitation in the next 30 days.

core/nicklist.c in Irssi before 0.8.15 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via vectors related to an attempted fuzzy nick match at the instant that a victim leaves a channel.

Affected products

• Irssi Irssi: up to and including 0.8.15; version 0.8.0 only; version 0.8.1 only; version 0.8.2 only; version 0.8.3 only; version 0.8.4 only; …

Published 2010-04-16. Last modified 2026-06-16.