CVE-2021-29376: Debian Linux

High severity, CVSS 7.5. EPSS: 2.3% chance of exploitation in the next 30 days.

ircII before 20210314 allows remote attackers to cause a denial of service (segmentation fault and client crash, disconnecting the victim from an IRC server) via a crafted CTCP UTC message.

Affected products

• Debian Debian Linux: version 9.0 only
• Eterna Ircii: before 20210314 (fixed in 20210314)

Published 2021-03-30. Last modified 2026-06-17.