What is CVE-2021-28501?

CVE-2021-28501 is a critical-severity vulnerability in Arista Terminattr, classified under Improper Authorization. CVSS score: 9.1/10. Published 2022-01-14.

How severe is CVE-2021-28501?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Auth bypass in Arista Terminattr

CVE-2021-28501

An issue has recently been discovered in Arista EOS where the incorrect use of EOS's AAA API’s by the OpenConfig and TerminAttr agents could result in unrestricted access to the device for local users with nopassword configuration.

EPSS: 0.008 (53.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.

Affected products

Arista Terminattr
Arista Networks Terminattr — versions 1.16.2 0

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

psirt@arista.com (Exploit, Patch, x_refsource_MISC, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2021-28501?: CVE-2021-28501 is a critical-severity vulnerability in Arista Terminattr, classified under Improper Authorization. CVSS score: 9.1/10. Published 2022-01-14.
How severe is CVE-2021-28501?: Critical severity. CVSS v3 base score is 9.1 out of 10.