CVE-2026-50263

Published: Giu 05, 2026 Last Modified: Giu 05, 2026
ExploitDB:
Other exploit source:
Google Dorks:
MEDIUM 5,5
Source: [email protected]
Attack Vector: local
Attack Complexity: low
Privileges Required: low
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: none
Availability: none

Description

AI Translation Available

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.

416

Use After Free

Stable
Abstraction: Variant Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Availability Confidentiality
Potential Impacts:
Modify Memory Dos: Crash, Exit, Or Restart Read Memory Execute Unauthorized Code Or Commands
Applicable Platforms
Languages: Memory-Unsafe, C, C++
Likelihood of Exploit: High
View CWE Details
https://access.redhat.com/security/cve/CVE-2026-50263
https://access.redhat.com/security/cve/CVE-2026-50263
https://bugzilla.redhat.com/show_bug.cgi?id=2485388
https://bugzilla.redhat.com/show_bug.cgi?id=2485388
https://gitlab.freedesktop.org/xorg/xserver/-/commit/ecc634…
https://gitlab.freedesktop.org/xorg/xserver/-/commit/ecc634f1b2f7aa473d3a267ead…
https://lists.x.org/archives/xorg-announce/2026-June/003702…
https://lists.x.org/archives/xorg-announce/2026-June/003702.html
https://redhat.atlassian.net/browse/PSIRTSUPT-16950
https://redhat.atlassian.net/browse/PSIRTSUPT-16950