Answer in brief
CVE-2024-21886 records a High severity (CVSS 7.8) vulnerability in Xorg-x11-server: heap buffer overflow in disabledevice. The current sources do not mark it as known exploited. The current feed maps xorg-server (generic), xorg/xserver (generic), xorg/xwayland (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps xorg-server (generic), xorg/xserver (generic), xorg/xwayland (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| xorg-servergeneric | 1.21.1.7 | Not reported |
| xorg/xservergeneric | * | Not reported |
| xorg/xwaylandgeneric | * | Not reported |
Published upstream
Feb 28, 2024
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Nov 4, 2026
A heap buffer overflow flaw was found in the DisableDevice function in the X.Org server. This issue may lead to an application crash or, in some circumstances, remote code execution in SSH X11 forwarding environments.
Quoted source text, attributed separately from HOL analysis.