CVE-2025-12380

Name: CVE-2025-12380
Creator: NVD / NIST
Published: 2025-10-28T14:15:57.86+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 0.31%

Last modified Jun 17, 2026

CVE-2025-12380 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 0.31% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

0.31%

22.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-416

Affected Software

Vendor	Product	Versions
Mozilla	Firefox	>= 142.0, < 144.0.2

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1993113Permissions Required, Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-86/Vendor Advisory

Timeline

Published: Oct 28, 2025
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2025-12380?

How severe is CVE-2025-12380?

CVE-2025-12380 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 0.31% probability of exploitation in the next 30 days.

How do I fix CVE-2025-12380?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-12380?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST