{"cve":"CVE-2019-11707","nvd":{"published":"2019-07-23T14:15:15.233","modified":"2026-06-17T02:13:28.073","status":"Analyzed","description":"A type confusion vulnerability can occur when manipulating JavaScript objects due to issues in Array.pop. This can allow for an exploitable crash. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 60.7.1, Firefox < 67.0.3, and Thunderbird < 60.7.2.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","score":8.8},"cwes":["CWE-843"],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=1544386","https://security.gentoo.org/glsa/201908-12","https://www.mozilla.org/security/advisories/mfsa2019-18/","https://www.mozilla.org/security/advisories/mfsa2019-20/","https://bugzilla.mozilla.org/show_bug.cgi?id=1544386"],"products":["mozilla:firefox","mozilla:thunderbird"],"source":"nvd","synced_at":"2026-10-19T20:58:11.797917892+00:00"},"epss":{"cve":"CVE-2019-11707","score":0.37951,"percentile":0.98549,"date":"2026-10-31"},"kev":{"cve":"CVE-2019-11707","date_added":"2022-05-23","due_date":"2022-06-13","vendor":"Mozilla","product":"Firefox and Thunderbird","known_ransomware":false},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}