Incorrect boundary conditions, uninitialized memory in the JavaScript Engine component. This vulnerability affects Firefox < 149, Firefox ESR < 140.9, Thunderbi…

A vulnerability in the JavaScript Engine component of Mozilla products involves incorrect boundary conditions and uninitialized memory access. The flaw affects multiple Mozilla applications including Firefox versions prior to 149, Firefox ESR versions prior to 140.9, and Thunderbird versions prior to 149 and 140.9. This represents a memory safety issue that could potentially lead to security compromises in JavaScript execution within these browsers and email clients.