CVE-2026-93521 — HIGH (7.8)

Vulnerability Description

A buffer overflow in RandR ChangeProviderProperty requests in X.Org X Server before 2.1.25 and XWayland before 24.4.14 could be used by authenticated X clients to crash or execute code within the X server context.

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/5dc9efd5a199717b53f70b9c6cd

FAQ

What is CVE-2026-93521?

CVE-2026-93521 is a vulnerability with a CVSS score of 7.8 (HIGH). A buffer overflow in RandR ChangeProviderProperty requests in X.Org X Server before 2.1.25 and XWayland before 24.4.14 could be used by authenticated X clients to crash or execute code within the X se...

How severe is CVE-2026-93521?

CVE-2026-93521 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-2026-93521?

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