{"schema_version":"public-product-v1.1","generated_at":"2026-07-21T10:12:46Z","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-20020515-transparent-cache-tcp-relay","slug":"cisco-sa-20020515-transparent-cache-tcp-relay","vendor":"Cisco","title":"Transparent Cache Engine and Content Engine TCP Relay Vulnerability","summary":"Cisco Cache Engines and Content Engines provide a transparent cache for world wide web pages retrieved via HTTP. These products also can be configured to transparently intercept requests to proxy servers supporting various protocols such as HTTPS. The default configuration of the proxy feature can be abused to open a TCP connection to any reachable destination IP address and hide the true IP source address of the connection. This behavior has been implicated in a variety of undesirable and possibly illegal activities such as transmitting unsolicited commercial e-mail, unauthorized network scanning, and denial of service attacks. There are two vulnerabilities that may cause this problem. The vulnerability for the HTTP proxy can be resolved by upgrading the code to a fixed version. The vulnerability for the HTTPS proxy can be resolved in the field by changing the configuration of the affected device. Fixed versions of the software have been modified to provide a more secure configuration by default. This advisory is available at https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20020515-transparent-cache-tcp-relay .","severity":"NA","published_at":"2002-05-15T18:00:00Z","updated_at":"2002-05-15T18:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20020515-transparent-cache-tcp-relay","csaf_url":"https://sec.cloudapps.cisco.com/security/center/contentjson/CiscoSecurityAdvisory/cisco-sa-20020515-transparent-cache-tcp-relay/csaf/cisco-sa-20020515-transparent-cache-tcp-relay.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":5,"public_evidence_count":5,"kev_count":0},"cves":[{"id":"CVE-2002-0778","kev":false}],"public_evidence":[{"product":{"name":"Cisco Application and Content Networking System (ACNS) Software","slug":"cisco-application-and-content-networking-system-acns-software","vendor":"Cisco"},"cve":{"id":"CVE-2002-0778"},"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":"2026-07-19T23:37:36Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Application and Content Networking System (ACNS) Software","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,"published_at":"2002-05-15T18:00:00Z","updated_at":"2002-05-15T18:00:00Z","advisory_updated_at":"2002-05-15T18:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20020515-transparent-cache-tcp-relay","row_display_order":1},{"product":{"name":"Cisco Cache Engine","slug":"cisco-cache-engine","vendor":"Cisco"},"cve":{"id":"CVE-2002-0778"},"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":"2026-07-19T23:37:36Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Cache Engine","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,"published_at":"2002-05-15T18:00:00Z","updated_at":"2002-05-15T18:00:00Z","advisory_updated_at":"2002-05-15T18:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20020515-transparent-cache-tcp-relay","row_display_order":2},{"product":{"name":"Cisco Content Distribution Manager (CDM)","slug":"cisco-content-distribution-manager-cdm","vendor":"Cisco"},"cve":{"id":"CVE-2002-0778"},"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":"2026-07-19T23:37:36Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Content Distribution Manager (CDM)","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,"published_at":"2002-05-15T18:00:00Z","updated_at":"2002-05-15T18:00:00Z","advisory_updated_at":"2002-05-15T18:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20020515-transparent-cache-tcp-relay","row_display_order":3},{"product":{"name":"Cisco Content Engine","slug":"cisco-content-engine","vendor":"Cisco"},"cve":{"id":"CVE-2002-0778"},"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":"2026-07-19T23:37:36Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Content Engine","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,"published_at":"2002-05-15T18:00:00Z","updated_at":"2002-05-15T18:00:00Z","advisory_updated_at":"2002-05-15T18:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20020515-transparent-cache-tcp-relay","row_display_order":4},{"product":{"name":"Cisco Content Router","slug":"cisco-content-router","vendor":"Cisco"},"cve":{"id":"CVE-2002-0778"},"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":"2026-07-19T23:37:36Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Content Router","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,"published_at":"2002-05-15T18:00:00Z","updated_at":"2002-05-15T18:00:00Z","advisory_updated_at":"2002-05-15T18:00:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20020515-transparent-cache-tcp-relay","row_display_order":5}]}