CVE-2025-12380: Vulnerability in Mozilla Firefox
A use-after-free vulnerability exists in Mozilla Firefox starting from version 142 through before 144.0.2. This flaw involves WebGPU-related IPC calls that allow a compromised child process to trigger memory corruption in the GPU or browser process. The vulnerability could potentially be exploited to escape the child process sandbox. Mozilla fixed this issue in Firefox 144.0.2.
AI Analysis
Technical Summary
CVE-2025-12380 is a critical use-after-free vulnerability (CWE-416) in Mozilla Firefox affecting versions from 142 up to but not including 144.0.2. The flaw occurs when a compromised child process uses WebGPU-related inter-process communication (IPC) calls to trigger a use-after-free condition in the GPU or browser process. This memory corruption could allow an attacker to escape the sandbox restrictions imposed on the child process. The vulnerability was reported by Oskar L and fixed in Firefox 144.0.2 as detailed in Mozilla Security Advisory MFSA 2025-86.
Potential Impact
Successful exploitation of this vulnerability could lead to sandbox escape from a compromised child process, potentially allowing an attacker to execute arbitrary code with higher privileges within the browser context. The CVSS score of 9.8 indicates critical impact with high confidentiality, integrity, and availability consequences.
Mitigation Recommendations
Mozilla has released an official fix for this vulnerability in Firefox version 144.0.2. Users and administrators should update affected Firefox installations to version 144.0.2 or later to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
CVE-2025-12380: Vulnerability in Mozilla Firefox
Description
A use-after-free vulnerability exists in Mozilla Firefox starting from version 142 through before 144.0.2. This flaw involves WebGPU-related IPC calls that allow a compromised child process to trigger memory corruption in the GPU or browser process. The vulnerability could potentially be exploited to escape the child process sandbox. Mozilla fixed this issue in Firefox 144.0.2.
CVSS v3.1
Score 9.8critical
Affected software
pkg:github/mozilla/firefoxRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2025-12380 is a critical use-after-free vulnerability (CWE-416) in Mozilla Firefox affecting versions from 142 up to but not including 144.0.2. The flaw occurs when a compromised child process uses WebGPU-related inter-process communication (IPC) calls to trigger a use-after-free condition in the GPU or browser process. This memory corruption could allow an attacker to escape the sandbox restrictions imposed on the child process. The vulnerability was reported by Oskar L and fixed in Firefox 144.0.2 as detailed in Mozilla Security Advisory MFSA 2025-86.
Potential Impact
Successful exploitation of this vulnerability could lead to sandbox escape from a compromised child process, potentially allowing an attacker to execute arbitrary code with higher privileges within the browser context. The CVSS score of 9.8 indicates critical impact with high confidentiality, integrity, and availability consequences.
Mitigation Recommendations
Mozilla has released an official fix for this vulnerability in Firefox version 144.0.2. Users and administrators should update affected Firefox installations to version 144.0.2 or later to remediate this issue. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- mozilla
- Date Reserved
- 2025-10-28T07:05:52.674Z
- State
- PUBLISHED
- Vendor Advisory Urls
- [{"url":"https://www.mozilla.org/security/advisories/mfsa2025-86/","vendor":"Mozilla"}]
Threat ID: 6900d1771db591194a8915da
Added to database: 10/28/2025, 14:21:43 UTC
Last enriched: 08/12/2026, 15:38:46 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 558
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