CVE-2017-5194: Debian Linux

High severity, CVSS 7.5. EPSS: 5% chance of exploitation in the next 30 days.

Use-after-free vulnerability in Irssi before 0.8.21 allows remote attackers to cause a denial of service (crash) via an invalid nick message.

Affected products

• Debian Debian Linux: version 7.0 only
• Irssi Irssi: before 0.8.21 (fixed in 0.8.21)

Published 2017-03-03. Last modified 2026-06-17.