CVE-2025-14324
Unknown Unknown - Not Provided
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Publication date: 2025-12-09

Last updated on: 2026-04-13

Assigner: Mozilla Corporation

Description
JIT miscompilation in the JavaScript Engine: JIT 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
2025-12-10
EPSS Evaluated
2026-06-14
NVD
CVE-2025-14324
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
mozilla firefox to 115.31.0 (exc)
mozilla firefox to 146.0 (exc)
mozilla firefox From 116.0 (inc) to 140.6.0 (exc)
mozilla thunderbird to 140.6.0 (exc)
mozilla thunderbird to 146.0 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-NVD-CWE-noinfo
CWE-94 The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
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Mitigation Strategies

To mitigate this vulnerability, update Firefox to version 146 or later, or Firefox ESR to version 115.31 or later for ESR 115, and to version 140.6 or later for ESR 140. These updates include fixes for the JIT miscompilation vulnerability in the JavaScript Engine. Keeping your browser up to date ensures that the security patches addressing this issue are applied. [3]

Executive Summary

This vulnerability is a JIT (Just-In-Time) miscompilation issue in the JavaScript Engine's JIT component affecting certain versions of Firefox and Firefox ESR. It means that the JIT compiler may incorrectly compile JavaScript code, potentially leading to unexpected behavior or security issues.

Impact Analysis

The impact of this vulnerability could include incorrect execution of JavaScript code, which might be exploited to cause crashes, data corruption, or potentially allow an attacker to execute arbitrary code or bypass security mechanisms in affected Firefox versions.

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