CVE-2021-4217

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

0.62% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 49.5% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

Low. Red Hat's rating for its own products, not a CVSS rating.

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

2022-08-24 15:08Z4 YR AGO

Last updated

2024-08-03 17:16Z2 YR AGO

Reserved

2022-01-27

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-476NULL Pointer DereferenceBase

Data version

5.1

Document digest

eb47b220c3fbbadd080db62604e6e9b9f17a9bffadf1706fc4a22455365b4e76

• bugs.launchpad.nethttps://bugs.launchpad.net/ubuntu/+source/unzip/+bug/1957077x_refsource_MISC
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2044583x_refsource_MISC
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2021-4217x_refsource_MISC