| CVE ID | CVE-2026-34003 |
| CVSS SCORE | 7.8, AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| AFFECTED VENDORS |
X.Org |
| AFFECTED PRODUCTS |
Server |
| VULNERABILITY DETAILS |
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 specific flaw exists within the handling of key types. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a buffer. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of root. |
| ADDITIONAL DETAILS |
X.Org has issued an update to correct this vulnerability. More details can be found at:
https://gitlab.freedesktop.org/xorg/xserver/-/commit/b85b00dd |
| DISCLOSURE TIMELINE |
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| CREDIT | Jan-Niklas Sohn |
