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.
References
| Link | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1929623 | Issue Tracking Permissions Required |
| https://www.mozilla.org/security/advisories/mfsa2025-01/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-02/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-04/ | Vendor Advisory |
| https://www.mozilla.org/security/advisories/mfsa2025-05/ | Vendor Advisory |
| https://lists.debian.org/debian-lts-announce/2025/01/msg00004.html |
Configurations
Configuration 1 (hide)
|
History
05 Oct 2026, 15:10
| Type | Values Removed | Values Added |
|---|---|---|
| Summary | (es) Analizar un módulo de JavaScript como JSON podría, en algunas circunstancias, provocar un acceso entre compartimentos, lo que puede dar lugar a use-after-free. Esta vulnerabilidad afecta a Firefox menor que 134 y Firefox ESR menor que 128.6. |
30 Sep 2026, 19:10
| Type | Values Removed | Values Added |
|---|---|---|
| Summary | (es) Analizar un módulo de JavaScript como JSON podría, en algunas circunstancias, provocar un acceso entre compartimentos, lo que puede dar lugar a use-after-free. Esta vulnerabilidad afecta a Firefox < 134 y Firefox ESR < 128.6. |
Information
Published : 2025-01-07 16:15
Updated : 2026-10-05 15:10
NVD link : CVE-2025-0240
Mitre link : CVE-2025-0240
CVE.ORG link : CVE-2025-0240
JSON object : View
Products Affected
mozilla
- firefox
- thunderbird
CWE
CWE-416
Use After Free