CVE-2026-94286CWE-126

CVE-2026-94286

High · published September 28, 2026

CVSS v3.1
7.1
EPSS
0%
Percentile
7.6
In the wild
Unconfirmed
What it is

An out-of-bounds read in libXtst's RECORD reply parser in libXtst before 1.2.6 could be used by malicious X servers to crash attached X clients.

The record
Technical detail
CVSS v3.1
7.1 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00185 · 7.6th percentile
Weakness
CWE-126 · Buffer Over-read
Published
2026-09-28T13:17Z
References (1)
https://gitlab.freedesktop.org/xorg/lib/libxtst/-/merge_requests/10/diffs?commit_id=16023c86070e6af9407330deea3938fcef75815b · [email protected]
EPSS history
Timeline
  • 29 SEP 03:28Z
    EPSS moved — → 0%
    epss
  • 28 SEP 08:50Z
    Out-of-bounds read in libXtst's RECORD reply parser
    cvelistv5