CVE-2025-0240

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 affects Firefox < 134, Firefox ESR < 128.6, Thunderbird < 134, and Thunderbird ESR < 128.6.

References

https://www.mozilla.org/security/advisories/mfsa2025-05/

https://www.mozilla.org/security/advisories/mfsa2025-04/

https://www.mozilla.org/security/advisories/mfsa2025-02/

https://www.mozilla.org/security/advisories/mfsa2025-01/

https://bugzilla.mozilla.org/show_bug.cgi?id=1929623

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3