CVE-2026-93543 — HIGH (7.4)

Vulnerability Description

An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.

CVSS Score

7.4

HIGH

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-125

References

https://gitlab.freedesktop.org/xorg/lib/libxi/-/merge_requests/23/diffs?commit_i

FAQ

What is CVE-2026-93543?

CVE-2026-93543 is a vulnerability with a CVSS score of 7.4 (HIGH). An out-of-bounds read in libXi's XI2 class parser in libXi before 1.8.4 could be used by malicious X servers to crash an attached X client.

How severe is CVE-2026-93543?

CVE-2026-93543 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-93543?

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