CVE-2021-21996

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

3.51% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 88.2% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

2021-09-08 00:00Z4 YR AGO

Last updated

2024-08-03 18:30Z2 YR AGO

Reserved

2021-01-04

Assigning CNA

vmware

Record state

PUBLISHED

Severity

Not rated by the issuing CNA

CNA CVSS vector

Not published by the issuing CNA

Weaknesses

• CWE-668Exposure of Resource to Wrong SphereClass

Data version

5.1

Document digest

09dece7eec415af2b4d59cd527591d8f26a7ca843843fd0e645c4ad5cbb6df7d

• saltproject.iohttps://saltproject.io/security_announcements/salt-security-advisory-2021-sep-02/
• lists.fedoraproject.orgFEDORA-2021-00ada7e667https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MBAHHSGZLEJRCG4DX6J4RBWJAAWH55RQ/vendor-advisory
• lists.fedoraproject.orgFEDORA-2021-93a7c8b7c6https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ACVT7M4YLZRLWWQ6SGRK3C6TOF4FXOXT/vendor-advisory
• lists.fedoraproject.orgFEDORA-2021-158e9c6eb9https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6BUWUF5VTENNP2ZYZBVFKPSUHLKLUBD5/vendor-advisory
• www.debian.orgDSA-5011https://www.debian.org/security/2021/dsa-5011vendor-advisory
• lists.debian.org[debian-lts-announce] 20211119 [SECURITY] [DLA 2823-1] salt security updatehttps://lists.debian.org/debian-lts-announce/2021/11/msg00017.htmlmailing-list
• lists.debian.org[debian-lts-announce] 20211121 [SECURITY] [DLA 2823-2] salt regression updatehttps://lists.debian.org/debian-lts-announce/2021/11/msg00019.htmlmailing-list
• security.gentoo.orgGLSA-202310-22https://security.gentoo.org/glsa/202310-22vendor-advisory