{"schema_version":"public-product-v1.1","generated_at":"2026-07-21T11:03:03Z","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-20151224-jab","slug":"cisco-sa-20151224-jab","vendor":"Cisco","title":"Cisco Jabber STARTTLS Downgrade Vulnerability","summary":"A vulnerability in the Cisco Jabber client could allow an unauthenticated, remote attacker to perform a STARTTLS downgrade attack. The vulnerability exists because the client does not verify that an Extensible Messaging and Presence Protocol (XMPP) connection has been established with Transport Layer Security (TLS). An attacker could exploit this vulnerability by performing a man-in-the-middle attack to tamper with the XMPP connection and avoid TLS negotiation. A successful exploit could allow the attacker to cause the client to establish a cleartext XMPP connection. Cisco will release software updates that address this vulnerability. Workarounds that address this vulnerability are not available. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151224-jab","severity":"Medium","published_at":"2015-12-24T18:30:00Z","updated_at":"2016-02-03T21:33:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151224-jab","csaf_url":"https://sec.cloudapps.cisco.com/security/center/contentjson/CiscoSecurityAdvisory/cisco-sa-20151224-jab/csaf/cisco-sa-20151224-jab.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,"highest_epss":0.01341},"cves":[{"id":"CVE-2015-6409","kev":false,"epss":{"score":0.01341,"percentile":0.68156,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:47Z"}}],"public_evidence":[{"product":{"name":"Cisco Jabber for Windows","slug":"cisco-jabber-for-windows","vendor":"Cisco"},"cve":{"id":"CVE-2015-6409"},"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":"2026-07-20T04:08:23Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Jabber for Windows","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":0.01341,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:47Z"},"published_at":"2015-12-24T18:30:00Z","updated_at":"2016-02-03T21:33:00Z","advisory_updated_at":"2016-02-03T21:33:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151224-jab","row_display_order":1},{"product":{"name":"Cisco Jabber for iOS","slug":"cisco-jabber-for-ios","vendor":"Cisco"},"cve":{"id":"CVE-2015-6409"},"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":"2026-07-20T04:08:23Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Jabber for iOS","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":0.01341,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:47Z"},"published_at":"2015-12-24T18:30:00Z","updated_at":"2016-02-03T21:33:00Z","advisory_updated_at":"2016-02-03T21:33:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151224-jab","row_display_order":2},{"product":{"name":"Cisco Jabber IM for Android","slug":"cisco-jabber-im-for-android","vendor":"Cisco"},"cve":{"id":"CVE-2015-6409"},"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":"2026-07-20T04:08:23Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Jabber IM for Android","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":0.01341,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:47Z"},"published_at":"2015-12-24T18:30:00Z","updated_at":"2016-02-03T21:33:00Z","advisory_updated_at":"2016-02-03T21:33:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151224-jab","row_display_order":3},{"product":{"name":"Cisco Jabber for Mac","slug":"cisco-jabber-for-mac","vendor":"Cisco"},"cve":{"id":"CVE-2015-6409"},"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":"2026-07-20T04:08:23Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Jabber for Mac","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":0.01341,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:47Z"},"published_at":"2015-12-24T18:30:00Z","updated_at":"2016-02-03T21:33:00Z","advisory_updated_at":"2016-02-03T21:33:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151224-jab","row_display_order":4},{"product":{"name":"Cisco Unified Communications Manager IM and Presence Service","slug":"cisco-unified-communications-manager-im-and-presence-service","vendor":"Cisco"},"cve":{"id":"CVE-2015-6409"},"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":"2026-07-20T04:08:23Z","csaf_status":"known_affected","csaf_product_status":"known_affected","csaf_product_status_path":"vulnerabilities[].product_status.known_affected","raw_product_name":"Cisco Unified Communications Manager IM and Presence Service","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":0.01341,"score_date":"2026-07-19","updated_at":"2026-07-20T05:46:47Z"},"published_at":"2015-12-24T18:30:00Z","updated_at":"2016-02-03T21:33:00Z","advisory_updated_at":"2016-02-03T21:33:00Z","source_url":"https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20151224-jab","row_display_order":5}]}