CVE-1999-1230: Id Software Quake 2

Medium severity, CVSS 5.0. EPSS: 1.3% chance of exploitation in the next 30 days.

Quake 2 server allows remote attackers to cause a denial of service via a spoofed UDP packet with a source address of 127.0.0.1, which causes the server to attempt to connect to itself.

Affected products

• Id Software Quake 2: any version

Published 1997-12-24. Last modified 2026-06-16.