Use-After-Free Memory Corruption in Firefox and Thunderbird
CVE-2025-11719

Currently unrated

Key Information:

Vendor: Mozilla
Status: Firefox; Thunderbird
Vendor: CVE Published:; 14 October 2025

What is CVE-2025-11719?

In Firefox and Thunderbird, versions prior to 144, a vulnerability exists within the native messaging API utilized by web extensions on Windows. This flaw can result in crashes due to use-after-free memory corruption, potentially impacting user experience and system stability. Users are advised to upgrade to the latest versions to mitigate the risk associated with this issue.