{"cve":{"cve_id":"CVE-2021-28498","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":0.00223,"epss_percentile":0.12727,"epss_as_of":"2026-06-23","description":"In Arista's MOS (Metamako Operating System) software which is supported on the 7130 product line, user enable passwords set in clear text could result in unprivileged users getting complete access to the systems. This issue affects: Arista Metamako Operating System MOS-0.13 and post releases in the MOS-0.1x train MOS-0.26.6 and prior releases in the MOS-0.2x train MOS-0.31.1 and prior releases in the MOS-0.3x train","published_at":"2021-09-09T12:38:21Z","last_modified_at":null,"cvss_v3_score":8.7,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/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-255"],"nvd_references":["https://www.arista.com/en/support/advisories-notices/security-advisories/12912-security-advisory-64"],"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":"L","value_label":"Local"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"C","value_label":"Changed"},{"metric":"C","name":"Confidentiality","value":"L","value_label":"Low"},{"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","vendor_name":"Arista","product_slug":"metamako-operating-system","product_name":"Metamako Operating System","version_start":"MOS-0.13","version_start_inclusive":true,"version_end":"MOS-0.13*","version_end_inclusive":false,"cpe23_uri":"cve5:arista:metamako-operating-system:MOS-0.13:MOS-0.13*"},{"vendor_slug":"arista","vendor_name":"Arista","product_slug":"metamako-operating-system","product_name":"Metamako Operating System","version_start":"MOS-0.26.7","version_start_inclusive":true,"version_end":"MOS-0.26.7","version_end_inclusive":false,"cpe23_uri":"cve5:arista:metamako-operating-system:MOS-0.26.7:MOS-0.26.7"},{"vendor_slug":"arista","vendor_name":"Arista","product_slug":"metamako-operating-system","product_name":"Metamako Operating System","version_start":"MOS-0.32.0","version_start_inclusive":true,"version_end":"MOS-0.32.0","version_end_inclusive":false,"cpe23_uri":"cve5:arista:metamako-operating-system:MOS-0.32.0:MOS-0.32.0"}],"exploit_refs":[],"news":[],"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisories/12912-security-advisory-64","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2021-09-09T12:38:21Z","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"}]}