CVE-2024-21886

HIGH
MEDIUM Priority: 0.11 BB Relevance: 41/100
Published: 2024-02-28 Modified: 2026-11-04 First seen: 2026-11-04 Status: active

Attack Surface

Low Complexity No Interaction Conf. Impact Integ. Impact

CVSS Vector Breakdown

AV: Local
AC: Low
PR: Low
UI: None
S: Unchanged
C: High
I: High
A: High

Description

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
— — 1.21.1.7

Bug Bounty Relevance

41 / 100
✓ Low complexity
✓ No user interaction

CVSS Score

7.8 / 10.0 v3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploitation Probability

1.42%
Raw Score 0.014200
Percentile 73.3%
Date 2026-11-14

EPSS Trend

2026-11-14
0.01420
2026-11-13
0.01420
2026-11-12
0.01420
2026-11-10
0.01420
2026-11-09
0.01420
2026-11-08
0.01420
2026-11-07
0.01420
2026-11-06
0.01420
2026-11-05
0.01420
2026-11-04
0.01420

Intelligence Sources

mitre ref →
nvd ref →