Firefox JIT Miscompilation (JS) <146/ESR<140.6
CVE-2025-14325 Published on December 9, 2025
JIT miscompilation in the JavaScript Engine: JIT component
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability affects Firefox < 146, Firefox ESR < 140.6, Thunderbird < 146, and Thunderbird < 140.6.
Vulnerability Analysis
CVE-2025-14325 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be low. considered to have a small impact on confidentiality and integrity and availability.
Weakness Type
What is an Object Type Confusion Vulnerability?
The program 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.
CVE-2025-14325 has been classified to as an Object Type Confusion vulnerability or weakness.
Products Associated with CVE-2025-14325
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Affected Versions
Mozilla Firefox:- Version unspecified and below 146 is affected.
- Version unspecified and below 140.6 is affected.
- Version unspecified and below 146 is affected.
- Version unspecified and below 140.6 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.