CVE-2026-34002

MEDIUM

6.1

Description

A flaw was found in the X.Org X server. This vulnerability, an out-of-bounds read, affects the XKB (X Keyboard Extension) modifier map handling. An attacker with access to the X11 server can exploit this by sending a malformed request, which causes the server to read beyond its intended memory boundaries. This can lead to the exposure of sensitive information or cause the server to crash, resulting in a denial of service.

CVE Details

CVSS v3.1 Score6.1

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L

Attack VectorLOCAL

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published5/5/2026

Last Modified5/5/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-805

References

https://access.redhat.com/security/cve/CVE-2026-34002(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2451112(secalert@redhat.com)

IOC Correlations

No correlations recorded

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