Mozilla Firefox up to 146.0.0 Access API use after free

Summaryinfo

A vulnerability classified as critical has been found in Mozilla Firefox up to 146.0.0. Affected is an unknown function of the component Access API. Performing a manipulation results in use after free. This vulnerability was named CVE-2025-14860. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Mozilla Firefox up to 146.0.0. This affects some unknown processing of the component Access API. The manipulation with an unknown input leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Use-after-free in the Disability Access APIs component. This vulnerability affects Firefox < 146.0.1.

The advisory is shared at bugzilla.mozilla.org. This vulnerability is uniquely identified as CVE-2025-14860 since 12/18/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 12/21/2025).

The vulnerability scanner Nessus provides a plugin with the ID 279423 (Linux Distros Unpatched Vulnerability : CVE-2025-14860), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 146.0.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (279423) and CERT Bund (WID-SEC-2025-2885). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

• Mozilla Firefox

Productinfo

Type

• Web Browser

Vendor

• Mozilla

Name

• Firefox

Version

• 146.0

License

• open-source

Website

• Vendor: https://www.mozilla.org/
• Product: https://www.mozilla.org/en-US/firefox/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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