Vulnerabilities CVE-2026-33999

CVE-2026-33999

High

Open

TLP:CLEAR

Xorg: xwayland: x.org x server: denial of service via integer underflow in xkb compatibility map handling

NVD CVE.org

DDoS

AI Analysis

No AI analysis yet.

Description

A flaw was found in the X.Org X server. This integer underflow vulnerability, specifically in the XKB compatibility map handling, allows an attacker with local or remote X11 server access to trigger a buffer read overrun. This can lead to memory-safety violations and potentially a denial of service (DoS) or other severe impacts.

Details

CVSS Score: 7.8
EPSS Score ⓘ: 0.38%

31.2th percentile
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Confidence: 90%
Published: Apr 23, 2026
Last Modified: May 28, 2026

Notes

No notes yet. Click "Add Note" to create the first analysis note.

Opinions

No opinions yet. Be the first to assess this intelligence.