THREATOPS
THREAT OPSThreat News › [NVD] CVE-2026-50263 (MEDIUM 5.5) — 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.

[NVD] CVE-2026-50263 (MEDIUM 5.5) — 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.

lownvdPublished 2026-06-05

CVE-2026-50263 CVSS: 5.5 MEDIUM Published: 2026-06-05T12:16:39.927

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.

Indicators of compromise

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-50263