CVE-2026-93518 — HIGH (7.8)

Vulnerability Description

An integer truncation issue in XkbResizeKeyType() that could lead to a heap buffer overflow by authenticated X clients in X.org X server before 21.1.25 and XWayland before 24.1.14 could be exploited for crashes or potential code execution in the X server.

CVSS Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-122

References

https://gitlab.freedesktop.org/xorg/xserver/-/commit/89101a6c6618f543d7502f2077c

FAQ

What is CVE-2026-93518?

CVE-2026-93518 is a vulnerability with a CVSS score of 7.8 (HIGH). An integer truncation issue in XkbResizeKeyType() that could lead to a heap buffer overflow by authenticated X clients in X.org X server before 21.1.25 and XWayland before 24.1.14 could be exploited f...

How severe is CVE-2026-93518?

CVE-2026-93518 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-93518?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.