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.

INFO

Published Date :

2026-04-23T14:53:59.414Z

Last Modified :

2026-04-24T13:37:08.875Z

Source :

redhat
AFFECTED PRODUCTS

The following products are affected by CVE-2026-33999 vulnerability.

Vendors Products
Redhat
  • Enterprise Linux
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33999.

URL Resource
https://access.redhat.com/security/cve/CVE-2026-33999 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2451106 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-33999 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-33999 cve-icon
Login to claim this CVE

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact