CVE-2021-4120

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

snapd 2.54.2 fails to perform sufficient validation of snap content interface and layout paths, resulting in the ability for snaps to inject arbitrary AppArmor policy rules via malformed content interface and layout declarations and hence escape strict snap confinement. Fixed in snapd versions 2.54.3+18.04, 2.54.3+20.04 and 2.54.3+21.10.1

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-20

Affected software

No affected versions have been published.

Timeline

Published
Feb 17, 2022
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2021-4120: High severity, CVSS 7.8 | Vulnix