Security Advisory

CVE-2026-33999

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-04-23 14:53:59

Last updated 2026-06-30 12:09:17

Assigner redhat

State PUBLISHED

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.

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