CVE-2026-94283
Received Received - Intake

Out-of-Bounds Read in libX11 XIM Attribute Parser

Publication date: 2026-09-28

Last updated on: 2026-09-28

Assigner: SUSE

Description
An out-of-bounds read vulnerability in libX11's XIM (X Input Method) attribute parser in libX11 before 1.8.14 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-2026-94283
EUVD
EUVD-2026-88174

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
libx11 libx11 to 1.8.14 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.

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Executive Summary

This is an out-of-bounds read vulnerability in libX11's X Input Method (XIM) attribute parser. It exists in versions before 1.8.14 and could allow malicious X servers to crash connected X clients by exploiting improper memory access during attribute parsing.

Impact Analysis

If you use an affected X client application, a malicious X server could crash your application by triggering this vulnerability. This could lead to denial of service for applications relying on libX11, potentially disrupting your workflow or services dependent on those applications.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards as it is a technical flaw in libX11's XIM attribute parser that could crash X clients. Compliance impact would depend on how the affected software is used in a system handling regulated data.

Mitigation Strategies

Update libX11 to version 1.8.14 or later to address the out-of-bounds read vulnerability in the XIM attribute parser.

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