CVE-2021-28506 json
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.
published 2022-01-14 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-15182
- cvss
- 9.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 73%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Exploit prediction
1.47% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- arista.com https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| NVD | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| NVD | 2.0 | 9.4 | AV:N/AC:L/Au:N/C:N/I:C/A:C |
Affected products
- Arista Networks EOS
Classification
References
-
arista.com
/en/support/advisories-notices/security-advisories/13449-security-advisory-0071
exploit, mitigation, patch, vendor-advisory
Sources
- CVE List CVE-2021-28506
- NVD CVE-2021-28506
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.