CVE-2025-14322
Unknown Unknown - Not Provided
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Publication date: 2025-12-09

Last updated on: 2026-04-13

Assigner: Mozilla Corporation

Description
Sandbox escape due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 146, Firefox ESR 115.31, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
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Meta Information
Published
2025-12-09
Last Modified
2026-04-13
Generated
2026-06-16
AI Q&A
2025-12-09
EPSS Evaluated
2026-06-15
NVD
CVE-2025-14322
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
mozilla firefox *
mozilla firefox_esr *
mozilla thunderbird to 140.6.0 (inc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-754 The product does not check or incorrectly checks for unusual or exceptional conditions that are not expected to occur frequently during day to day operation of the product.
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Executive Summary

This vulnerability is a sandbox escape caused by incorrect boundary conditions in the Graphics: CanvasWebGL component of Firefox. It affects versions of Firefox before 146 and Firefox ESR before 115.31 and 140.6. Essentially, it allows an attacker to break out of the restricted environment (sandbox) that normally limits what web content can do, potentially enabling them to execute code or access resources outside the intended boundaries.

Impact Analysis

The vulnerability can allow an attacker to escape the browser's sandbox, which may lead to unauthorized access to system resources or execution of malicious code with higher privileges. This can compromise the security and integrity of your system or data when using affected versions of Firefox.

Mitigation Strategies

To mitigate this vulnerability, update Firefox to version 146 or later, or Firefox ESR to version 115.31 or later, where the issue has been fixed. Applying these updates will address the sandbox escape caused by incorrect boundary conditions in the Graphics: CanvasWebGL component. [2]

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