CVE-2026-50262

5.5 MEDIUM
Published: June 05, 2026 Modified: June 15, 2026
View on NVD

Description

An out-of-bounds read flaw was found in the X.Org X server and Xwayland in __glXDisp_ChangeDrawableAttributes(). A wrong size validation check can read a client-controlled number of bytes, exceeding the request buffer, leading to information disclosure. A write path also exists but requires byte-swapped clients which is disabled by default.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

Login to generate AI explanation

CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://access.redhat.com/security/cve/CVE-2026-50262
Source: secalert@redhat.com
Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2485387
Source: secalert@redhat.com
Issue Tracking Vendor Advisory
https://lists.x.org/archives/xorg-announce/2026-June/003702.html
Source: secalert@redhat.com
Mailing List Vendor Advisory
https://redhat.atlassian.net/browse/PSIRTSUPT-16950
Source: secalert@redhat.com
Permissions Required

5 reference(s) from NVD

Quick Stats

CVSS v3 Score
5.5 / 10.0
EPSS (Exploit Probability)
0.2%
7th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

x.org redhat