{"schema_version":"public-product-v1.1","generated_at":"2026-07-21T10:40:25Z","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","advisory":{"id":"cisco-sa-20200226-nxos-arp","slug":"cisco-sa-20200226-nxos-arp","vendor":"Cisco","title":"Cisco NX-OS Software Anycast Gateway Invalid ARP Vulnerability","summary":"A vulnerability in the anycast gateway feature of Cisco NX-OS Software could allow an unauthenticated, adjacent attacker to cause a device to learn invalid Address Resolution Protocol (ARP) entries. The ARP entries are for nonlocal IP addresses for the subnet. The vulnerability is due to improper validation of a received gratuitous ARP (GARP) request. An attacker could exploit this vulnerability by sending a malicious GARP packet on the local subnet to cause the ARP table on the device to become corrupted. A successful exploit could allow the attacker to populate the ARP table with incorrect entries, which could lead to traffic disruptions. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-arp","severity":"Medium","published_at":"2020-02-26T16:00:00Z","updated_at":"2020-02-26T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-arp","csaf_url":"https://sec.cloudapps.cisco.com/security/center/contentjson/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-arp/csaf/cisco-sa-20200226-nxos-arp.json","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure."},"freshness":{"last_source_refreshed_at":"2026-07-21T05:16:34Z","latest_source_refresh_at":"2026-07-21T05:16:34Z","oldest_source_refresh_at":"2026-07-21T03:00:03Z","all_sources_fresh":true,"sources":[{"source":"cisco_advisories","label":"Cisco advisories","last_success_at":"2026-07-21T03:00:03Z","stale":false},{"source":"cisco_csaf","label":"Cisco CSAF","last_success_at":"2026-07-21T05:14:24Z","stale":false},{"source":"nvd_cves","label":"NVD CVEs","last_success_at":"2026-07-21T05:16:30Z","stale":false},{"source":"cisa_kev","label":"CISA KEV","last_success_at":"2026-07-21T05:16:31Z","stale":false},{"source":"first_epss","label":"EPSS","last_success_at":"2026-07-21T05:16:34Z","stale":false}]},"summary":{"cve_count":1,"visible_product_count":3,"public_evidence_count":3,"kev_count":0,"highest_epss":0.00274},"cves":[{"id":"CVE-2020-3174","kev":false,"epss":{"score":0.00274,"percentile":0.19393,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:33Z"}}],"public_evidence":[{"product":{"name":"Cisco Nexus 7000 Series Switches","slug":"cisco-nexus-7000-series-switches","vendor":"Cisco"},"cve":{"id":"CVE-2020-3174"},"evidence_type":"structured_affected","evidence_label":{"scope":"CSAF product evidence","label":"product_status known affected"},"evidence_source":"Cisco CSAF","source":"Cisco CSAF","source_document_fetched_at":"2026-07-20T04:15:14Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco NX-OS Software 8.1(1) when installed on Cisco Nexus 7000 Series Switches; Cisco NX-OS Software 8.1(2) when installed on Cisco Nexus 7000 Series Switches; Cisco NX-OS Software 8.1(2a) when installed on Cisco Nexus 7000 Series Switches; Cisco NX-OS Software 8.2(1) when installed on Cisco Nexus 7000 Series Switches; Cisco NX-OS Software 8.2(2) when installed on Cisco Nexus 7000 Series Switches; Cisco NX-OS Software 8.2(3) when installed on Cisco Nexus 7000 Series Switches; Cisco NX-OS Software 8.2(4) when installed on Cisco Nexus 7000 Series Switches; Cisco NX-OS Software 8.3(1) when installed on Cisco Nexus 7000 Series Switches; Cisco NX-OS Software 8.3(2) when installed on Cisco Nexus 7000 Series Switches; Cisco NX-OS Software 8.4(1) when installed on Cisco Nexus 7000 Series Switches","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","exposure_verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","kev":false,"epss":{"score":0.00274,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:33Z"},"published_at":"2020-02-26T16:00:00Z","updated_at":"2020-02-26T16:00:00Z","advisory_updated_at":"2020-02-26T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-arp","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-arp"},"row_display_order":1},{"product":{"name":"Cisco Nexus 3000 Series Switches","slug":"cisco-nexus-3000-series-switches","vendor":"Cisco"},"cve":{"id":"CVE-2020-3174"},"evidence_type":"structured_affected","evidence_label":{"scope":"CSAF product evidence","label":"product_status known affected"},"evidence_source":"Cisco CSAF","source":"Cisco CSAF","source_document_fetched_at":"2026-07-20T04:15:14Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco NX-OS Software 9.2(1) when installed on Cisco Nexus 3000 Series Switches; Cisco NX-OS Software 9.2(2) when installed on Cisco Nexus 3000 Series Switches; Cisco NX-OS Software 9.2(2t) when installed on Cisco Nexus 3000 Series Switches; Cisco NX-OS Software 9.2(2v) when installed on Cisco Nexus 3000 Series Switches; Cisco NX-OS Software 9.2(3) when installed on Cisco Nexus 3000 Series Switches; Cisco NX-OS Software 9.2(3y) when installed on Cisco Nexus 3000 Series Switches; Cisco NX-OS Software 9.2(4) when installed on Cisco Nexus 3000 Series Switches; Cisco NX-OS Software 9.3(1) when installed on Cisco Nexus 3000 Series Switches","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","exposure_verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","kev":false,"epss":{"score":0.00274,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:33Z"},"published_at":"2020-02-26T16:00:00Z","updated_at":"2020-02-26T16:00:00Z","advisory_updated_at":"2020-02-26T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-arp","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-arp"},"row_display_order":2},{"product":{"name":"Cisco Nexus 9000 Series Switches","slug":"cisco-nexus-9000-series-switches","vendor":"Cisco"},"cve":{"id":"CVE-2020-3174"},"evidence_type":"structured_affected","evidence_label":{"scope":"CSAF product evidence","label":"product_status known affected"},"evidence_source":"Cisco CSAF","source":"Cisco CSAF","source_document_fetched_at":"2026-07-20T04:15:14Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco NX-OS Software 9.2(1) when installed on Cisco Nexus 9000 Series Switches; Cisco NX-OS Software 9.2(2) when installed on Cisco Nexus 9000 Series Switches; Cisco NX-OS Software 9.2(3) when installed on Cisco Nexus 9000 Series Switches; Cisco NX-OS Software 9.2(3y) when installed on Cisco Nexus 9000 Series Switches; Cisco NX-OS Software 9.2(4) when installed on Cisco Nexus 9000 Series Switches; Cisco NX-OS Software 9.3(1) when installed on Cisco Nexus 9000 Series Switches; Cisco NX-OS Software 9.3(1z) when installed on Cisco Nexus 9000 Series Switches","exposure_verdict":"not_assessed","verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","exposure_verdict_reason":"Public evidence does not evaluate exact release, platform, enabled features, configuration, compensating controls, or live exposure.","kev":false,"epss":{"score":0.00274,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:33Z"},"published_at":"2020-02-26T16:00:00Z","updated_at":"2020-02-26T16:00:00Z","advisory_updated_at":"2020-02-26T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-arp","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20200226-nxos-arp"},"row_display_order":3}]}