CVE-2026-94284

MEDIUM CVSS 3.1: 5.5 EPSS 0.10%
Updated Sep 30, 2026
X.Org
Parameter Value
CVSS 5.5 (MEDIUM)
Affected Versions 0 — 1.8.14
Fixed In 1.8.14
Type CWE-125 (Out-of-bounds Read)
Vendor X.Org
Public PoC No

An out-of-bounds read vulnerability in libX11's XIM trigger-key registration parser in libX11 before 1.8.14 could be used by malicious X servers to crash attached X clients.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
X.Org Libx11
cpe:2.3:a:x.org:libx11:*:*:*:*:*:*:*:*
0 1.8.14