CVE-2025-0240CWE-416

CVE-2025-0240

Medium · published January 7, 2025

CVSS v3.1

4.0

EPSS

Percentile

51.5

In the wild

Unconfirmed

What it is

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.

The record

Technical detail

CVSS v3.1: 4.0 · MEDIUM
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0: Not supplied
EPSS: 0.00673 · 51.5th percentile
Weakness: CWE-416 · Use After Free
Published: 2025-01-07T21:15Z

Affected products (4)

Product	Versions	Fixed in
mozilla/firefox	< 128.6.0	128.6.0
mozilla/firefox	< 134.0	134.0
mozilla/thunderbird	< 128.6.0	128.6.0
mozilla/thunderbird	≥ 129.0, < 134.0	134.0

References (6)

https://bugzilla.mozilla.org/show_bug.cgi?id=1929623 · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-01/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-02/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-04/ · [email protected]https://www.mozilla.org/security/advisories/mfsa2025-05/ · [email protected]https://lists.debian.org/debian-lts-announce/2025/01/msg00004.html · af854a3a-2127-422b-91ae-364da2661108

EPSS history

Timeline

07 JAN 16:07Z
Compartment mismatch when parsing JavaScript JSON module
cvelistv5