CVE-2026-94286
Received Received - Intake

Out-of-Bounds Read in libXtst RECORD Reply Parser

Publication date: 2026-09-28

Last updated on: 2026-09-28

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.

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Meta Information

Published
2026-09-28
Last Modified
2026-09-28
Generated
2026-09-28
AI Q&A
2026-09-28
EPSS Evaluated
N/A
NVD
CVE-2026-94286
EUVD
EUVD-2026-88178

Affected Vendors & Products

Currently, no data is known.

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Exploitability

CWE
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KEV
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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.

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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.

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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