EIP-2026-102763

PRE-CVE

X Window 4.0/4.1/4.2 - System Oversized Font Denial of Service

Title source: legacy
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for EIP-2026-102763. PoCs published by Tom Vogt.

AI-analyzed exploit summary The exploit describes a denial-of-service vulnerability in the X Window System caused by an overly large font size. It affects components like xfs and libXfont, leading to unpredictable behavior or crashes.

Description

X Window 4.0/4.1/4.2 - System Oversized Font Denial of Service

Exploits (1)

exploitdb WRITEUP VERIFIED
by Tom Vogt · textdoslinux
https://www.exploit-db.com/exploits/21518

The exploit describes a denial-of-service vulnerability in the X Window System caused by an overly large font size. It affects components like xfs and libXfont, leading to unpredictable behavior or crashes.

Classification
Writeup 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Theoretical
Target: X Window System (including XFree86)
No auth needed
Prerequisites: Ability to pass a large font size to the X Window System via a web client or similar application
mistral-large-3 · analyzed Feb 18, 2026 Full analysis →

Details

Status pre_cve
Tracked Since Feb 18, 2026