{"cve":{"cve_id":"CVE-2021-28503","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00723,"epss_percentile":0.49194,"epss_as_of":"2026-06-23","description":"The impact of this vulnerability is that Arista's EOS eAPI may skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI.","published_at":"2022-02-04T22:29:27.998000Z","last_modified_at":null,"cvss_v3_score":7.4,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-305"],"nvd_references":["https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:15:25.251935Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"H","value_label":"High"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"N","value_label":"None"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"arista-eos","product_name":"Arista EOS","version_start":"EOS-4.23","version_start_inclusive":true,"version_end":"EOS-4.23.10","version_end_inclusive":false,"cpe23_uri":"cve5:arista-networks:arista-eos:EOS-4.23:EOS-4.23.10"},{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"arista-eos","product_name":"Arista EOS","version_start":"EOS-4.24","version_start_inclusive":true,"version_end":"EOS-4.24.8","version_end_inclusive":false,"cpe23_uri":"cve5:arista-networks:arista-eos:EOS-4.24:EOS-4.24.8"},{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"arista-eos","product_name":"Arista EOS","version_start":"EOS-4.25","version_start_inclusive":true,"version_end":"EOS-4.25.6","version_end_inclusive":false,"cpe23_uri":"cve5:arista-networks:arista-eos:EOS-4.25:EOS-4.25.6"},{"vendor_slug":"arista-networks","vendor_name":"Arista Networks","product_slug":"arista-eos","product_name":"Arista EOS","version_start":"EOS-4.26","version_start_inclusive":true,"version_end":"EOS-4.26.3","version_end_inclusive":false,"cpe23_uri":"cve5:arista-networks:arista-eos:EOS-4.26:EOS-4.26.3"}],"exploit_refs":[],"news":[],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2022-02-04T22:29:27.998000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:17:54.413810Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:17:54.413810Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:17:54.413810Z","label":"CVSS score revised","source":"cvelistv5"}]}