CVE-2021-4037

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

0.31% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 23.6% of scored records. A rank, not a probability.

NVD base score

4.4 (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:L/I:L/A:N

NVD analysis status

Modified. NVD last modified this record on 2026-08-10.

Red Hat severity

Moderate. 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 00:00Z4 YR AGO

Last updated

2026-08-10 16:47Z24 DAYS AGO

Reserved

2021-12-01

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Medium (CVSS 4.4)

CNA CVSS vector

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

Weaknesses

• CWE-284Improper Access ControlPillar

Data version

5.2

Document digest

5b9d758d232d9aa45b17dbdfa4a7183ff9e52959467f6432a7c2a80ef457c423

• access.redhat.comRHSA-2022:1975https://access.redhat.com/errata/RHSA-2022:1975vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2022:1988https://access.redhat.com/errata/RHSA-2022:1988vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2022:4829https://access.redhat.com/errata/RHSA-2022:4829vendor-advisoryx_refsource_REDHAT
• access.redhat.comRHSA-2022:4835https://access.redhat.com/errata/RHSA-2022:4835vendor-advisoryx_refsource_REDHAT
• access.redhat.comhttps://access.redhat.com/security/cve/CVE-2021-4037vdb-entryx_refsource_REDHAT
• bugzilla.redhat.comRHBZ#2027239https://bugzilla.redhat.com/show_bug.cgi?id=2027239issue-trackingx_refsource_REDHAT
• git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=01ea173e103e
• git.kernel.orghttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=0fa3ecd87848
• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2004810
• www.debian.orgDSA-5257https://www.debian.org/security/2022/dsa-5257vendor-advisory
• lists.debian.org[debian-lts-announce] 20221101 [SECURITY] [DLA 3173-1] linux-5.10 security updatehttps://lists.debian.org/debian-lts-announce/2022/11/msg00001.htmlmailing-list