CVE-2021-28506

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

1.42% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 71.0% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

NVD analysis status

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

Red Hat severity

No Red Hat rating. Red Hat rates the CVEs that affect its products.

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

2022-01-14 19:04Z4 YR AGO

Last updated

2024-09-16 22:09Z1 YR AGO

Reserved

2021-03-16

Assigning CNA

Arista

Record state

PUBLISHED

Severity

Critical (CVSS 9.1)

CNA CVSS vector

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

Weaknesses

• CWE-285Improper AuthorizationClass
• CWE-306Missing Authentication for Critical FunctionBase
• CWE-862Missing AuthorizationClass

Data version

5.1

Document digest

125b638128e3e32782d149be12e569218feec6bcbbc862c152e5fbf36bc0a26c

• www.arista.comhttps://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071x_refsource_MISC