CVE-2004-2596: Id Software Quake Ii Server

Medium severity, CVSS 5.0. EPSS: 1.9% chance of exploitation in the next 30 days.

Quake II server before R1Q2, as used in multiple products, allows remote attackers to cause a denial of service (exhaustion of connection slots) via a large number of connections from the same IP address.

Affected products

• Id Software Quake Ii Server: version 3.20 only; version 3.21 only

Published 2004-12-31. Last modified 2026-06-16.