ZDI-26-763: X.Org Server XKB XkbResizeKeyType Numeric Truncation Privilege Escalation Vulnerability
Published Oct 15, 2026
·Updated
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. The following CVEs are assigned: CVE-2026-93518.
Affected Software
1 affected component
X.Org Foundation X.Org Server
Event History
Oct 15, 2026
Advisory Published
via ZDI·05:00 AM
Data Sourced
via ZDI·05:00 AM
Description
Frequently Asked Questions
1
Who is exposed to this vulnerability?
Affected X.Org Server installations are exposed to local privilege escalation. The attacker must already be able to execute low-privileged code on the target system.
2
Can this vulnerability be exploited remotely without prior access?
The provided information describes this as a local attack. It requires prior ability to run low-privileged code on the affected system.
3
What identifier should be used to track this issue?
Track this vulnerability as CVE-2026-93518. ZDI also identifies it as ZDI-26-763.