CVE-2024-3853

HIGH

Firefox < 125.0 - Use-After-Free during JavaScript Realm Initialization

Title source: llm

Description

A use-after-free could result if a JavaScript realm was in the process of being initialized when a garbage collection started. This vulnerability affects Firefox < 125.

References (2)

Core 2

Core References

Issue Tracking

https://bugzilla.mozilla.org/show_bug.cgi?id=1884427

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2024-18/

Scores

CVSS v3 7.5

EPSS 0.0009

EPSS Percentile 25.6%

Attack Vector ADJACENT_NETWORK

CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-416

Status published

Products (1)

mozilla/firefox < 125.0

Published Apr 16, 2024

Tracked Since Feb 18, 2026