{"cve":"CVE-2025-0240","nvd":{"published":"2025-01-07T16:15:38.663","modified":"2026-10-05T15:10:00.590","status":"Modified","description":"Parsing a JavaScript module as JSON could, under some circumstances, cause cross-compartment access, which may result in a use-after-free. This vulnerability was fixed in Firefox 134, Firefox ESR 128.6, Thunderbird 134, and Thunderbird 128.6.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","score":4.0},"cwes":["CWE-416"],"references":["https://bugzilla.mozilla.org/show_bug.cgi?id=1929623","https://www.mozilla.org/security/advisories/mfsa2025-01/","https://www.mozilla.org/security/advisories/mfsa2025-02/","https://www.mozilla.org/security/advisories/mfsa2025-04/","https://www.mozilla.org/security/advisories/mfsa2025-05/"],"products":["mozilla:firefox","mozilla:thunderbird"],"source":"nvd","synced_at":"2026-10-19T21:58:20.756570362+00:00"},"epss":{"cve":"CVE-2025-0240","score":0.00673,"percentile":0.51823,"date":"2026-10-25"},"kev":null,"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."]}