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CVE-2026-93518

X.Org Server XKB ResizeKeyType Numeric Truncation

HIGH
7.8
CVSS Score
Published: October 28, 2026 at 02:32 PM UTC
Updated: October 28, 2026 at 03:21 PM UTC
2 products affected across 1 vendorXwaylandxorg-x11-server

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Xwayland· X Org
90%
All versions
xorg-x11-server· X Org
80%
All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (1)

Patch
Source: cverecord
https://gitlab.freedesktop.org/xorg/xserver/-/commit/89101a6c6618f543d7502f2077c7ef1a507af256

CVSS

7.8HIGHsuse
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-122

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