ZDI-26-394
HIGH 7.8
Published
Jun 24, 2026
X.Org Server FreeCounter Use-After-Free Privilege Escalation Vulnerability
X.Org
This vulnerability allows local attackers to escalate privileges on affected installations of X.Org Server. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The ZDI has assigned a CVSS rating of 7.8.