{"api_version":"1","generated_at":"2026-04-22T22:49:48+00:00","cve":"CVE-2021-28506","urls":{"html":"https://cve.report/CVE-2021-28506","api":"https://cve.report/api/cve/CVE-2021-28506.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-28506","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-28506"},"summary":{"title":"CVE-2021-28506","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.","state":"PUBLIC","assigner":"psirt@arista.com","published_at":"2022-01-14 20:15:00","updated_at":"2022-07-14 18:47:00"},"problem_types":["CWE-306","CWE-862"],"metrics":[],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071","name":"https://www.arista.com/en/support/advisories-notices/security-advisories/13449-security-advisory-0071","refsource":"MISC","tags":[],"title":"Security Advisory 0071 - 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Arista recommends customers move to the latest version of each release. \nCVE-2021-28506 has been fixed in the following releases:\n4.26.3M and later releases in the 4.26.x train\n4.25.6M and later releases in the 4.25.x train\n4.25.4.1M and later releases in the 4.25.4.x train\n4.24.8M and later releases in the 4.24.x train"}],"source":{"advisory":"71","defect":["BUG","606192"],"discovery":"EXTERNAL"},"work_around":[{"lang":"eng","value":"No mitigation options available"},{"lang":"eng","value":"To mitigate CVE-2021-28506 with the continued use of the affected agents, a hotfix employing a proxy service can be deployed. The proxy is configured behind the gNMI/gNOI or RESTCONF server. The hotfix can be downloaded at https://www.arista.com/en/support/advisories-notices/sa-download/?sa=71-SecurityAdvisory0071Hotfix.i386.swix for 32 bit systems and https://www.arista.com/en/support/advisories-notices/sa-download/?sa=71-SecurityAdvisory0071Hotfix.x86_64.swix for 64 bit systems."}]},"nvd":{"publishedDate":"2022-01-14 20:15:00","lastModifiedDate":"2022-07-14 18:47:00","problem_types":["CWE-306","CWE-862"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL"},"exploitabilityScore":3.9,"impactScore":5.2},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:C/A:C","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE","baseScore":9.4},"severity":"HIGH","exploitabilityScore":10,"impactScore":9.2,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*","versionStartIncluding":"4.24.0","versionEndIncluding":"4.24.7m","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*","versionStartIncluding":"4.25.0","versionEndIncluding":"4.25.3","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*","versionStartIncluding":"4.25.4","versionEndIncluding":"4.25.4m","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*","versionStartIncluding":"4.25.5","versionEndIncluding":"4.25.5.1m","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*","versionStartIncluding":"4.26.0","versionEndIncluding":"4.26.2f","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"28506","Ordinal":"203677","Title":"CVE-2021-28506","CVE":"CVE-2021-28506","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"28506","Ordinal":"1","NoteData":"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.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"28506","Ordinal":"2","NoteData":"2022-01-14","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"28506","Ordinal":"3","NoteData":"2022-01-14","Type":"Other","Title":"Modified"}]}}}