{"schema_version":"public-product-v1.1","generated_at":"2026-07-21T10:41:34Z","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-dhcp-dos-T3CXPO9z","slug":"cisco-sa-dhcp-dos-t3cxpo9z","vendor":"Cisco","title":"Cisco IOS XE Software DHCP Snooping with Endpoint Analytics Denial of Service Vulnerability","summary":"A vulnerability in the DHCP snooping feature of Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to a crafted IPv4 DHCP request packet being mishandled when endpoint analytics are enabled. An attacker could exploit this vulnerability by sending a crafted DHCP request through an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. Note: The attack vector is listed as network because a DHCP relay anywhere on the network could allow exploits from networks other than the adjacent one. 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-dhcp-dos-T3CXPO9z This advisory is part of the March 2024 release of the Cisco IOS and IOS XE Software Security Advisory Bundled Publication. For a complete list of the advisories and links to them, see Cisco Event Response: September 2023 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication.","severity":"High","published_at":"2024-03-27T16:00:00Z","updated_at":"2024-03-27T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dhcp-dos-T3CXPO9z","csaf_url":"https://sec.cloudapps.cisco.com/security/center/contentjson/CiscoSecurityAdvisory/cisco-sa-dhcp-dos-T3CXPO9z/csaf/cisco-sa-dhcp-dos-T3CXPO9z.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":0.00816},"cves":[{"id":"CVE-2024-20259","kev":false,"epss":{"score":0.00816,"percentile":0.53089,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"}}],"public_evidence":[{"product":{"name":"Cisco IOS XE Software","slug":"cisco-ios-xe-software","vendor":"Cisco"},"cve":{"id":"CVE-2024-20259"},"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":"2026-07-20T02:34:26Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"17.1.1; 17.1.1a; 17.1.1s; 17.1.1t; 17.1.2; 17.1.3; 17.10.1; 17.10.1a; 17.10.1b; 17.11.1; 17.11.1a; 17.11.99SW; 17.12.1; 17.12.1a; 17.12.1w; 17.2.1; 17.2.1a; 17.2.1r; 17.2.1v; 17.2.2; 17.2.3; 17.3.1; 17.3.1a; 17.3.1w; 17.3.1x; 17.3.1z; 17.3.2; 17.3.2a; 17.3.3; 17.3.3a; 17.3.4; 17.3.4a; 17.3.4b; 17.3.4c; 17.3.5; 17.3.5a; 17.3.5b; 17.3.6; 17.3.7; 17.3.8; 17.3.8a; 17.4.1; 17.4.1a; 17.4.1b; 17.4.1c; 17.4.2; 17.4.2a; 17.5.1; 17.5.1a; 17.6.1; 17.6.1a; 17.6.1w; 17.6.1x; 17.6.1y; 17.6.1z; 17.6.1z1; 17.6.2; 17.6.3; 17.6.3a; 17.6.5; 17.6.5a; 17.6.6; 17.6.6a; 17.7.1; 17.7.1a; 17.7.1b; 17.7.2; 17.8.1; 17.8.1a; 17.9.1; 17.9.1a; 17.9.1w; 17.9.1x; 17.9.1x1; 17.9.1y; 17.9.1y1; 17.9.2; 17.9.2a; 17.9.3; 17.9.3a; 17.9.4; 17.9.4a","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":0.00816,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"},"published_at":"2024-03-27T16:00:00Z","updated_at":"2024-03-27T16:00:00Z","advisory_updated_at":"2024-03-27T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dhcp-dos-T3CXPO9z","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dhcp-dos-T3CXPO9z"},"row_display_order":1},{"product":{"name":"Cisco IOS XE Catalyst SD-WAN","slug":"cisco-ios-xe-catalyst-sd-wan","vendor":"Cisco"},"cve":{"id":"CVE-2024-20259"},"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":"2026-07-20T02:34:26Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"17.6.4","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":0.00816,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"},"published_at":"2024-03-27T16:00:00Z","updated_at":"2024-03-27T16:00:00Z","advisory_updated_at":"2024-03-27T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dhcp-dos-T3CXPO9z","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dhcp-dos-T3CXPO9z"},"row_display_order":2},{"product":{"name":"Cisco Catalyst 6800 Series Switches","slug":"cisco-catalyst-6800-series-switches","vendor":"Cisco"},"cve":{"id":"CVE-2024-20259"},"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":"2026-07-20T02:34:26Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco IOS XE Software Release 17.1.1 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.1.1a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.1.1s when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.1.1t when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.1.2 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.1.3 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.10.1 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.10.1a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.10.1b when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.11.1 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.11.1a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.11.99SW when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.12.1 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.12.1a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.12.1w when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.2.1 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.2.1a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.2.1r when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.2.1v when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.2.2 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.2.3 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.1 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.1a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.1w when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.1x when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.1z when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.2 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.2a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.3 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.3a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.4 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.4a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.4b when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.4c when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.5 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.5a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.5b when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.6 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.7 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.8 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.3.8a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.4.1 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.4.1a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.4.1b when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.4.1c when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.4.2 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.4.2a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.5.1 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.5.1a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.6.1 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.6.1a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.6.1w when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.6.1x when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.6.1y when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.6.1z when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.6.1z1 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.6.2 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.6.3 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.6.3a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.6.4 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.6.5 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.6.5a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.6.6 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.6.6a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.7.1 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.7.1a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.7.1b when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.7.2 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.8.1 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.8.1a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.9.1 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.9.1a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.9.1w when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.9.1x when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.9.1x1 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.9.1y when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.9.1y1 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.9.2 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.9.2a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.9.3 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.9.3a when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.9.4 when installed on Cisco Catalyst 6800 Series Switches; Cisco IOS XE Software Release 17.9.4a when installed on Cisco Catalyst 6800 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":0.00816,"score_date":"2026-07-20","updated_at":"2026-07-21T05:16:34Z"},"published_at":"2024-03-27T16:00:00Z","updated_at":"2024-03-27T16:00:00Z","advisory_updated_at":"2024-03-27T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-dhcp-dos-T3CXPO9z","row_display_order":3}]}