CVE-2007-3837: Hydrairc

High severity, CVSS 7.8. EPSS: 1.4% chance of exploitation in the next 30 days.

Heap-based buffer overflow in HydraIRC 0.3.151 allows remote IRC servers to cause a denial of service (application crash) via a long CTCP request message containing '%' (percent) characters.

Affected products

• Hydrairc Hydrairc: version 0.3.151 only

Published 2007-07-17. Last modified 2026-06-16.