CVE-2021-4120

Exploitation

Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.

SSVC decision

Not assessed by CISA

EPSS probability

0.44% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 36.3% of scored records. A rank, not a probability.

NVD base score

7.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

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

NVD analysis status

Modified. NVD last modified this record on 2026-06-17.

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

Published

2022-02-17 22:15Z4 YR AGO

Last updated

2024-08-03 17:16Z2 YR AGO

Reserved

2021-12-14

Assigning CNA

canonical

Record state

PUBLISHED

Severity

High (CVSS 8.2)

CNA CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Weaknesses

• CWE-20Improper Input ValidationClass

Data version

5.1

Document digest

52cea4d2ee98bfad89348b6ab04b54dc5125e18edb7babf84506bcf77c63f581

• ubuntu.comhttps://ubuntu.com/security/notices/USN-5292-1x_refsource_MISC
• bugs.launchpad.nethttps://bugs.launchpad.net/snapd/+bug/1949368x_refsource_MISC
• www.openwall.com[oss-security] 20220218 CVE-2021-4120: Insufficient validation of snap content interface and layout pathshttp://www.openwall.com/lists/oss-security/2022/02/18/2mailing-listx_refsource_MLIST
• lists.fedoraproject.orgFEDORA-2022-82bea71e5ahttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3QTBN7LLZISXIA4KU4UKDR27Q5PXDS2U/vendor-advisoryx_refsource_FEDORA
• lists.fedoraproject.orgFEDORA-2022-5df8b52ba4https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XCGHG6LJAVJJ72TMART6A7N4Z6MSTGI7/vendor-advisoryx_refsource_FEDORA