CVE-2026-50263EPSS p3.9%

CVE-2026-50263CVE-2026-50263

x.org / x_server

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.

Scoring

CVSS 5.5 ()
VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS0.14% probability of exploitation · percentile 3.9% · 2026-08-03T12:00:16Z
Last modified2026-07-27

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.