CVE-2021-24031

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

0.43% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 35.8% of scored records. A rank, not a probability.

NVD base score

5.5 (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:N/A:N

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

2021-03-04 20:15Z5 YR AGO

Last updated

2024-08-03 19:21Z2 YR AGO

Reserved

2021-01-13

Assigning CNA

facebook

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-277Insecure Inherited PermissionsVariant
• CWE-276Incorrect Default PermissionsBase
• CWE-281Improper Preservation of PermissionsBase

Data version

5.1

Document digest

2227c76f78d7dd5518ae35b7c30fbf8a99291c3691a4662d577f5daf7267e713

• github.comhttps://github.com/facebook/zstd/issues/1630x_refsource_MISC
• bugs.debian.orghttps://bugs.debian.org/cgi-bin/bugreport.cgi?bug=981404x_refsource_MISC
• www.facebook.comhttps://www.facebook.com/security/advisories/cve-2021-24031x_refsource_MISC