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CVE-2026-50262

5.5
MEDIUMCVSS v3.1 Base Score
0.01%
LOW RiskEPSS (3rd percentile)

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.

Published: 6/5/2026
Modified: 6/5/2026
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Vulnerability Summary

CVSS v3 Score

5.5MEDIUM

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

EPSS Score (Exploitation Probability)

0.01%LOW Exploitation Risk
3rd percentile

This vulnerability has a 0.01% probability of being exploited in the next 30 days, ranking higher than 3% of all scored CVEs.

CWE Classification

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Same Weakness Type(CWE-125)

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