---
id: CVE-2025-12380
title: >-
  Starting with Firefox 142, it was possible for a compromised child process to
  trigger a use-after-free in the GPU or browser process using WebGPU-related
  IPC calls
summary: >-
  Starting with Firefox 142, it was possible for a compromised child process to
  trigger a use-after-free in the GPU or browser process using WebGPU-related
  IPC calls. This may have been usable to escape the child process sandbox. This
  vuln…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-416
vendor: mozilla
product: firefox
affected:
  - 'firefox >= 142.0, < 144.0.2'
patched:
  - firefox 144.0.2
published: '2025-10-28'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T17:10:00.187'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-12380'
references:
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1993113'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-86/'
    label: security@mozilla.org
tags:
  - nvd
epss: 0.00338
epssPercentile: 0.24752
ingestedAt: '2026-09-30T17:13:20.716Z'
---

## Overview

Starting with Firefox 142, it was possible for a compromised child process to trigger a use-after-free in the GPU or browser process using WebGPU-related IPC calls. This may have been usable to escape the child process sandbox. This vulnerability was fixed in Firefox 144.0.2.

## Affected

- `firefox >= 142.0, < 144.0.2`

## Remediation

Upgrade past the affected range:

- `firefox 144.0.2`