CVE-2014-8091: X.org x11

Medium severity, CVSS 4.3. EPSS: 4.2% chance of exploitation in the next 30 days.

X.Org X Window System (aka X11 and X) X11R5 and X.Org Server (aka xserver and xorg-server) before 1.16.3, when using SUN-DES-1 (Secure RPC) authentication credentials, does not check the return value of a malloc call, which allows remote attackers to cause a denial of service (NULL pointer dereference and server crash) via a crafted connection request.

Affected products

• X.org x11: version 5.0 only
• X.org X Server: up to and including 1.16.2

Published 2014-12-10. Last modified 2026-06-17.