CVE-2021-28506
CVSS v3
9.1
CRITICAL
EPSS Score
1.4 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially allow a factory reset of the device.
Technical details
- Published
- 2022-01-14
Frequently asked questions
What is CVE-2021-28506?
An issue has recently been discovered in Arista EOS where certain gNOI APIs incorrectly skip authorization and authentication which could potentially allow a factory reset of the device.
Is CVE-2021-28506 actively exploited?
Active exploitation of CVE-2021-28506 has not been confirmed. Its EPSS score was 1.4% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2021-28506?
CVE-2021-28506 has a CVSS v3 base score of 9.1 (CRITICAL severity).
Is CVE-2021-28506 affecting your environment?
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