CVE-2021-4149

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

0.40% probability of exploitation activity in the next 30 days.

EPSS percentile

Equal to or higher than the score of 33.9% 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:N/I:N/A:H

NVD analysis status

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

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

2022-03-23 19:46Z4 YR AGO

Last updated

2024-08-03 17:16Z2 YR AGO

Reserved

2021-12-21

Assigning CNA

redhat

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-667Improper LockingClass

Data version

5.1

Document digest

b81e1bdfc7609900d11a56f31b0edca168125b6d173892d2a2705d16e66e391f

• bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2026485x_refsource_MISC
• lkml.orghttps://lkml.org/lkml/2021/10/18/885x_refsource_MISC
• lkml.orghttps://lkml.org/lkml/2021/9/13/2565x_refsource_MISC
• lists.debian.org[debian-lts-announce] 20220701 [SECURITY] [DLA 3065-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2022/07/msg00000.htmlmailing-listx_refsource_MLIST