Vulnerability · Published Jan 14, 2022 · Assigned by Arista
CVE-2021-28500An 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.
Critical 9.1
In plain English
A critical-severity security flaw in Arista EOS from Arista Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 57% of all known vulnerabilities).
Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.8%top 42.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Arista Networks | Arista EOS | 4.26.1F – through 4.26.04.25.4.M – through 4.25.04.24.6M – through 4.24.6.04.23.8M – through 4.23.04.22.11M – through 4.22.04.21.14M – through 4.21.04.20 – before 0 |
Weakness: CWE-285 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H