CVE-2021-28494

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

0.88% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 56.4% of scored records. A rank, not a probability.

NVD base score

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

NVD CVSS vector

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

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

2021-09-09 12:46Z4 YR AGO

Last updated

2024-08-03 21:47Z2 YR AGO

Reserved

2021-03-16

Assigning CNA

Arista

Record state

PUBLISHED

Severity

Critical (CVSS 9.6)

CNA CVSS vector

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

Weaknesses

• CWE-287Improper AuthenticationClass

Data version

5.1

Document digest

5b0e5d5a958c21e1219895b754ed39af9aa8b9e0bbcdfe0d2649c7f3192d2b03

• www.arista.comhttps://www.arista.com/en/support/advisories-notices/security-advisories/12916-security-advisory-68x_refsource_MISC