CVE-2021-43976

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

0.64% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 48.2% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

CVSS:3.1/AV:P/AC:L/PR:N/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

2021-11-17 00:00Z4 YR AGO

Last updated

2024-08-04 04:10Z2 YR AGO

Reserved

2021-11-17

Assigning CNA

mitre

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-459Incomplete CleanupBase

Data version

5.1

Document digest

53b7de37634dd2a273b6da6d7d20c8d5827d963cd7c2ba69cd2f6c5078f7f0ef

• patchwork.kernel.orghttps://patchwork.kernel.org/project/linux-wireless/patch/YX4CqjfRcTa6bVL+%40Zekuns-MBP-16.fios-router.home/
• lists.fedoraproject.orgFEDORA-2021-eab8c5a263https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/X24M7KDC4OJOZNS3RDSYC7ELNELOLQ2N/vendor-advisory
• lists.fedoraproject.orgFEDORA-2021-c09b851eb0https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YODMYMGZYDXQKGJGX7TJG4XV4L5YLLBD/vendor-advisory
• www.debian.orgDSA-5092https://www.debian.org/security/2022/dsa-5092vendor-advisory
• lists.debian.org[debian-lts-announce] 20220309 [SECURITY] [DLA 2940-1] linux security updatehttps://lists.debian.org/debian-lts-announce/2022/03/msg00011.htmlmailing-list
• lists.debian.org[debian-lts-announce] 20220309 [SECURITY] [DLA 2941-1] linux-4.19 security updatehttps://lists.debian.org/debian-lts-announce/2022/03/msg00012.htmlmailing-list
• www.debian.orgDSA-5096https://www.debian.org/security/2022/dsa-5096vendor-advisory
• www.oracle.comhttps://www.oracle.com/security-alerts/cpujul2022.html
• security.netapp.comhttps://security.netapp.com/advisory/ntap-20211210-0001/
• git.kernel.orghttps://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=04d80663f67ccef893061b49ec8a42ff7045ae84