{"id":"CVE-2021-28500","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-28500","generatedAt":"2026-10-27T22:32:51.654Z","title":"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.","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.","published":"2022-01-14T20:15:10.000Z","lastModified":"2026-06-17T03:46:28.000Z","status":"Modified","sourceIdentifier":"psirt@arista.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-285"],"affected":["arista/eos"],"epss":{"score":0.00811,"percentile":0.56675,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.81%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071","tags":["Exploit","Mitigation","Patch","Vendor Advisory"],"source":"psirt@arista.com"},{"url":"https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071","tags":["Exploit","Mitigation","Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-28500","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}