Update Firefox to Patch CVE-2025-13016 Vulnerability Affecting 180 Million Users

AI security firm AISLE revealed CVE-2025-13016, a critical Firefox Wasm bug that risked 180M users for six months. Learn how the memory flaw allowed code execution.

AI security firm AISLE recently discovered a serious vulnerability in the Firefox web browser that went unnoticed for six months. This flaw could have let attackers run their own instructions on a user’s computer, potentially putting over 180 million users at risk.

The Cause: A Tiny Coding Error

The flaw, tracked as CVE-2025-13016, was a subtle coding mistake that existed in a key part of Firefox’s engine that handles WebAssembly (Wasm). WebAssembly is basically a type of code that runs very quickly in your browser, typically used for games and complex web applications.

According to AISLE, the problem was a stack buffer overflow within a memory feature called Garbage Collection (GC). For your information, GC is a mechanism that automatically frees up ...