ZDI-CAN-31834: ZDI-26-763: X.Org Server XKB XkbResizeKeyType Numeric Truncation Privilege Escalation Vulnerability
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
Event History
Frequently Asked Questions
Who is exposed to this vulnerability?
Affected X.Org Server installations are exposed when an attacker can already execute low-privileged code locally on the system. It is a local privilege-escalation issue rather than a remotely exploitable issue based on the available information.
What does an attacker need before exploitation is possible?
The attacker must first obtain the ability to execute code with low privileges on the target system. The provided information does not describe any additional prerequisites or required configuration.
How severe is the issue?
The vulnerability has a CVSS rating of 7.8 and is tracked as CVE-2026-93518. Successful exploitation allows a local attacker to escalate privileges on an affected installation.