Name: CVE-2026-94286: Buffer Over-read
Creator: Rapid7
Published: 2026-09-28T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2026-94286, CWE-126, CVSS 7.1, EPSS 0.00202

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 Details

CVSS 3.1 Base Score: 7.1
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Alpine Linux	—	Upgrade libxtst	Oct 20, 2026	Sep 28, 2026
Amazon_linux_2023	—	Upgrade libXtst-debugsourceUpgrade libXtstUpgrade libXtst-debuginfoUpgrade libXtst-devel	Oct 28, 2026	Sep 28, 2026
Redhat_linux	—	No solution exists	Sep 29, 2026	Sep 28, 2026
Ubuntu	—	No solution existsUpgrade libxtst-dev (Ubuntu Pro)Upgrade libxtst-devUpgrade libxtst6Upgrade libxtst6 (Ubuntu Pro)	Oct 20, 2026	Oct 19, 2026

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CVSS Details

Covered by Rapid7

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