CVE-2000-0491: Caldera Openlinux

High severity, CVSS 10.0. EPSS: 17.8% chance of exploitation in the next 30 days.

Buffer overflow in the XDMCP parsing code of GNOME gdm, KDE kdm, and wdm allows remote attackers to execute arbitrary commands or cause a denial of service via a long FORWARD_QUERY request.

Affected products

• Caldera Openlinux: any version
• Gnome Gdm: version 1.0 only
• Suse Suse Linux: version 6.2 only; version 6.4 only

Published 2000-05-24. Last modified 2026-06-16.