{"schema":"threatline.record/2","record":{"id":"CVE-2019-11707","aliases":[],"summary":"Mozilla Firefox and Thunderbird Type Confusion Vulnerability","details":"Mozilla Firefox and Thunderbird contain a type confusion vulnerability that can occur when manipulating JavaScript objects due to issues in Array.pop, allowing for an exploitable crash.","categories":["Applications & CMS"],"product":"Firefox and Thunderbird","vendor":"Mozilla","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2019-11707","source_modified_at":"2025-10-21T23:45:33.091Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Firefox ESR","vendor":"Mozilla","versions":[{"lessThan":"60.7.1","status":"affected","version":"unspecified","versionType":"custom"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2019-11707","source_modified_at":"2025-10-21T23:45:33.091Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Firefox","vendor":"Mozilla","versions":[{"lessThan":"67.0.3","status":"affected","version":"unspecified","versionType":"custom"}],"defaultStatus":null},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2019-11707","source_modified_at":"2025-10-21T23:45:33.091Z","fetched_at":"2026-10-23T18:42:43.628194Z","product":"Thunderbird","vendor":"Mozilla","versions":[{"lessThan":"60.7.2","status":"affected","version":"unspecified","versionType":"custom"}],"defaultStatus":null}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2019-11707","source_modified_at":"2025-10-21T23:45:33.091Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Firefox ESR","ecosystem":null},"version":"60.7.1","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2019-11707","source_modified_at":"2025-10-21T23:45:33.091Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Firefox","ecosystem":null},"version":"67.0.3","basis":"first unaffected version stated in the CVE record"},{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2019-11707","source_modified_at":"2025-10-21T23:45:33.091Z","fetched_at":"2026-10-23T18:42:43.628194Z","package":{"name":"Thunderbird","ecosystem":null},"version":"60.7.2","basis":"first unaffected version stated in the CVE record"}],"cvss":8.8,"severity":"High","kev":{"listed":true,"date_added":"2022-05-23","due_date":"2022-06-13","required_action":"Apply updates per vendor instructions.","ransomware_campaign_use":"Unknown"},"epss":{"probability":0.37696,"percentile":0.98541,"score_date":"2026-10-23"},"published_at":"2019-07-23T13:20:17.000Z","modified_at":"2025-10-21T23:45:33.091Z","provenance":[{"source":"CISA KEV","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23T17:00:09.9001Z"},{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2019-11707","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2025-10-21T23:45:33.091Z"},{"source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/50691","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2022-02-02"},{"source":"Exploit-DB","url":"https://www.exploit-db.com/exploits/47038","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2019-06-26"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2019-11707","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CISA KEV","CVE List","Exploit-DB","EPSS"],"references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-11707","source":"CISA KEV"},{"source":"CVE List","url":"https://www.mozilla.org/security/advisories/mfsa2019-20/","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://www.mozilla.org/security/advisories/mfsa2019-18/","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1544386","tags":["x_refsource_MISC","x_transferred"]},{"source":"CVE List","url":"https://security.gentoo.org/glsa/201908-12","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred"]},{"source":"CVE List","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-11707","tags":["government-resource"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CISA ADP","ssvc":{"exploitation":"active","automatable":"no","technical_impact":"total","assessed_at":"2025-02-07T12:49:50.350133Z"},"exploits":[{"source":"Exploit-DB","kind":"Local exploit","name":"Mozilla Firefox 67 - 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