Description
A stack buffer overflow in  ProcXTestFakeInput DeviceValuator handling in X.Org xwayland before 24.1.15 and X server before 21.1.26 could be used by authenticated clients to crash or execute code in the X server.
Published: 2026-11-13
Score: 8.5 High
EPSS: n/a
KEV: No
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Remediation

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History

Fri, 13 Nov 2026 14:30:00 +0000

Type Values Removed Values Added
Description A stack buffer overflow in  ProcXTestFakeInput DeviceValuator handling in X.Org xwayland before 24.1.15 and X server before 21.1.26 could be used by authenticated clients to crash or execute code in the X server.
Title X.Org Server XTestFakeInput Valuator Stack Out-Of-Bounds Write
First Time appeared X.org
X.org xorg-x11-server
X.org xwayland
Weaknesses CWE-121
CPEs cpe:2.3:a:x.org:xorg-x11-server:*:*:*:*:*:*:*:*
cpe:2.3:a:x.org:xwayland:*:*:*:*:*:*:*:*
Vendors & Products X.org
X.org xorg-x11-server
X.org xwayland
References
Metrics cvssV4_0

{'score': 8.5, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Subscriptions

X.org Xorg-x11-server Xwayland
cve-icon MITRE

Status: PUBLISHED

Assigner: suse

Published:

Updated: 2026-11-13T14:23:59.219Z

Reserved: 2026-10-12T06:41:23.778Z

Link: CVE-2026-109093

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-11-13T15:17:29.873

Modified: 2026-11-13T15:17:29.977

Link: CVE-2026-109093

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses