CVE-2025-14330
BaseFortify
Publication date: 2025-12-09
Last updated on: 2026-04-13
Assigner: Mozilla Corporation
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mozilla | firefox | to 140.6.0 (exc) |
| mozilla | firefox | to 146.0 (exc) |
| mozilla | thunderbird | to 140.6.0 (exc) |
| mozilla | thunderbird | to 146.0 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-119 | The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data. |
| CWE-NVD-CWE-noinfo | |
| CWE-686 | The product calls a function, procedure, or routine, but the caller specifies an argument that is the wrong data type, which may lead to resultant weaknesses. |
| CWE-843 | The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a JIT (Just-In-Time) miscompilation issue in the JavaScript Engine's JIT component affecting Firefox versions prior to 146 and Firefox ESR versions prior to 140.6. It means that the JIT compiler may incorrectly compile JavaScript code, potentially leading to unexpected behavior or security issues.
How can this vulnerability impact me? :
The impact of this vulnerability could include incorrect execution of JavaScript code, which might be exploited to cause crashes, execute arbitrary code, or bypass security mechanisms in affected Firefox browsers.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, update Firefox to version 146 or later, or Firefox ESR to version 140.6 or later, as these versions include fixes for the JIT miscompilation and other related security issues. [2]