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CVE WatchAug 5, 2026

CVE-2026-50263

A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow(). A client can trigger a use-after-free read after

CVSS

5.5

Medium

EPSS

0.1%

p4

KEV

—

Exploit Today

1

0-100

Published: Jun 5, 2026 · Last modified: Aug 5, 2026 · CWE-416

EPSS · 30d
0.1%EPSS · 30 days0.1%
2026-08-052026-09-02
Technical description

A use-after-free flaw was found in the X.Org X server and Xwayland in CreateSaverWindow(). A client can trigger a use-after-free read after changing window attributes and forcing the screen saver, leading to information disclosure.

Official references
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