CVE-2026-34002mediumCWE-805

CVE-2026-34002: medium-severity vulnerability in Red Hat Enterprise Linux 10

Xorg: xwayland: x.org x server: information disclosure or denial of service via out-of-bounds read in xkb modifier map handling

Published 05 May 2026 · Updated 05 Nov 2026

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 6.1epss 0.5%

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.

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

Affected products

Related CVEs — Red Hat Enterprise Linux 10

In the same product, most dangerous first.

CVE-2023-4911HIGHGlibc: buffer overflow in ld.so leading to privilege escalationEPSS 63.8%KEV CVE-2024-6387HIGHOpenssh: regresshion - race condition in ssh allows rce/dosEPSS 99.5%CVE-2024-3094CRITICALXz: malicious code in distributed sourceEPSS 90.9%CVE-2024-12084CRITICALRsync: heap buffer overflow in rsync due to improper checksum length handlingEPSS 72.5%CVE-2023-1183MEDIUMArbitrary file writeEPSS 64.9%CVE-2023-34966HIGHSamba: infinite loop in mdssvc rpc service for spotlightEPSS 62.4%

References