CVE-2026-94286

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BaseFortify

Publication date: 2026-09-28

Last updated on: 2026-09-30

Assigner: SUSE

Description

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.

CVSS Scores

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Meta Information

Published

2026-09-28

Last Modified

2026-09-30

Generated

2026-10-18

AI Q&A

2026-09-28

EPSS Evaluated

2026-10-16

NVD

CVE-2026-94286

EUVD

EUVD-2026-88178

Affected Vendors & Products

Vendor	Product	Version / Range
x.org	libXtst	0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-126	The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer.

Attack-Flow Graph

Executive Summary

This vulnerability is an out-of-bounds read in libXtst's RECORD reply parser. It exists in versions of libXtst before 1.2.6. A malicious X server could exploit this to crash attached X clients by sending specially crafted data.

Detection Guidance

This vulnerability involves an out-of-bounds read in libXtst's RECORD reply parser. Detection requires checking the version of libXtst installed on your system. If the version is below 1.2.6, the system is vulnerable. Use the command 'pkg-config --modversion xtst' or 'rpm -q libXtst' to check the installed version.

Impact Analysis

If you use an affected version of libXtst, a malicious X server could crash your X client applications. This could lead to denial of service for those applications. The impact is limited to client crashes and does not allow code execution or data theft.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards. It is an out-of-bounds read issue in libXtst that could cause crashes in X clients but does not involve data exposure or unauthorized access.

Mitigation Strategies

Update libXtst to version 1.2.6 or later to address the out-of-bounds read vulnerability in the RECORD reply parser.

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