{"schema_version":"public-product-v1.1","generated_at":"2026-07-21T11:16:32Z","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-sdwan-utd-dos-hDATqxs","slug":"cisco-sa-sdwan-utd-dos-hdatqxs","vendor":"Cisco","title":"Cisco Catalyst SD-WAN Routers Denial of Service Vulnerability","summary":"A vulnerability in the process that classifies traffic that is going to the Unified Threat Defense (UTD) component of Cisco IOS XE Software in controller mode could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability exists because UTD improperly handles certain packets as those packets egress an SD-WAN IPsec tunnel. An attacker could exploit this vulnerability by sending crafted traffic through an SD-WAN IPsec tunnel that is configured on an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. Note: SD-WAN tunnels that are configured with Generic Routing Encapsulation (GRE) are not affected by this vulnerability. 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-sdwan-utd-dos-hDATqxs This advisory is part of the September 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 2024 Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled Publication.","severity":"High","published_at":"2024-09-25T16:00:00Z","updated_at":"2024-09-25T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-utd-dos-hDATqxs","csaf_url":"https://sec.cloudapps.cisco.com/security/center/contentjson/CiscoSecurityAdvisory/cisco-sa-sdwan-utd-dos-hDATqxs/csaf/cisco-sa-sdwan-utd-dos-hDATqxs.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":0.00662},"cves":[{"id":"CVE-2024-20455","kev":false,"epss":{"score":0.00662,"percentile":0.47555,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:49Z"}}],"public_evidence":[{"product":{"name":"Cisco Catalyst 8300 Edge Platform","slug":"cisco-catalyst-8300-edge-platform","vendor":"Cisco"},"cve":{"id":"CVE-2024-20455"},"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":"2026-07-20T00:51:34Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco IOS XE Catalyst SD-WAN 17.6.4 when installed on Cisco Catalyst 8300 Edge Platform","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":0.00662,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:49Z"},"published_at":"2024-09-25T16:00:00Z","updated_at":"2024-09-25T16:00:00Z","advisory_updated_at":"2024-09-25T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-utd-dos-hDATqxs","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-utd-dos-hDATqxs"},"row_display_order":1},{"product":{"name":"Cisco IOS XE Software","slug":"cisco-ios-xe-software","vendor":"Cisco"},"cve":{"id":"CVE-2024-20455"},"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":"2026-07-20T00:51:34Z","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; 17.12.2; 17.12.2a; 17.13.1; 17.13.1a; 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; 17.5.1b; 17.5.1c; 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; 17.9.5; 17.9.5a; 17.9.5b; 17.9.5c; 17.9.5d; 17.9.5e; 17.9.5f","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":0.00662,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:49Z"},"published_at":"2024-09-25T16:00:00Z","updated_at":"2024-09-25T16:00:00Z","advisory_updated_at":"2024-09-25T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-utd-dos-hDATqxs","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-utd-dos-hDATqxs"},"row_display_order":2},{"product":{"name":"Cisco IOS XE Catalyst SD-WAN","slug":"cisco-ios-xe-catalyst-sd-wan","vendor":"Cisco"},"cve":{"id":"CVE-2024-20455"},"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":"2026-07-20T00:51:34Z","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":0.00662,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:49Z"},"published_at":"2024-09-25T16:00:00Z","updated_at":"2024-09-25T16:00:00Z","advisory_updated_at":"2024-09-25T16:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-utd-dos-hDATqxs","remediation":{"url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-utd-dos-hDATqxs"},"row_display_order":3}]}