WebUSB Bypass: Controlling a Raspberry Pi Pico via a U2F Exploit

Control a Raspberry Pi Pico from your browser without WebUSB! This article details a method that exploits a vulnerability in the U2F security key protocol. By emulating a U2F security key, data is disguised as a signature, bypassing browser security restrictions to control the Pico's LED. While this leverages a U2F flaw, it's not a security vulnerability in itself, only working on devices intentionally designed with this vulnerability. The article stresses the risks of connecting unknown USB devices.