CVE-2021-4011

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

A flaw was found in xorg-x11-server in versions before 21.1.2 and before 1.20.14. An out-of-bounds access can occur in the SwapCreateRegister function. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-119

Affected software

No affected versions have been published.

Timeline

Published
Dec 17, 2021
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-4011: High severity, CVSS 7.8 | Vulnix