CVE-2021-28503

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

0.73% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 51.8% of scored records. A rank, not a probability.

NVD base score

9.8 (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:H/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

2022-02-04 22:29Z4 YR AGO

Last updated

2024-09-16 23:06Z1 YR AGO

Reserved

2021-03-16

Assigning CNA

Arista

Record state

PUBLISHED

Severity

High (CVSS 7.4)

CNA CVSS vector

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

Weaknesses

• CWE-305Authentication Bypass by Primary WeaknessBase
• CWE-287Improper AuthenticationClass

Data version

5.1

Document digest

a00fa337061ab1d888893d1bd040518419a3166eda27a32702b1fb24ead87c46

• www.arista.comhttps://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072x_refsource_MISC