Use-after-free in X.org Server - CVE-2026-93515
Published: October 20, 2026
Vulnerability identifier: #VU156252
CSH Severity: Low
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93515
CWE-ID: CWE-416
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to compromise vulnerable system.
The vulnerability exists due to a use-after-free error within the handling of present_window_priv objects. A local user can gain access to sensitive information on the system.
Affected software
X.org Server
How to mitigate CVE-2026-93515
Install updates from vendor's website.