What happened?
The Nintendo Switch 2 jailbreak ns2jb was released by security researcher Sammy Hajhamid, known as pepsipu, on October 22, 2026. It is the first software-only jailbreak for the console. The exploit works on the latest firmware (23.0.1), is tethered (does not persist after reboot), and grants userland access, allowing native code execution, save backups, reverse engineering, and game modifications.
To demonstrate the Nintendo Switch 2 jailbreak ns2jb, he used the tool to add characters such as Cinnamoroll, Peter Griffin, Hatsune Miku, and Angry Birds' Red to Mario Kart World, a Switch 2 exclusive. The process was assisted by OpenAI's Codex model in discovering and building the exploit, which involves an integer overflow in the original Switch game SmileBASIC 4 and a buffer overflow in the Switch 2's filesystem module.
Why is this important?
This is the first significant public access to the Switch 2 system about a year after launch. Although it is not a full kernel jailbreak and does not allow persistent custom firmware or easy piracy, it opens the door for the homebrew and modding community. Nintendo has already removed SmileBASIC 4 from the eShop, and the exploit is expected to be patched in future firmware updates.
The involvement of AI in developing the Nintendo Switch 2 jailbreak ns2jb highlights how coding models are accelerating security research on consoles.
What changes in practice?
Users interested in homebrew or mods can explore ns2jb, but the process is complex, requires the SmileBASIC 4 game (or reported alternatives), a PC with Node.js on the same network, and carries risks of bricking (some reports of damaged units). It is not recommended for most casual players. The Switch 2 modding community may grow quickly from here, similar to what happened with the original Switch.
Nintendo has not yet officially commented on the exploit beyond removing the game from the store.
Image credit: Mario Kart World mods demonstration — Source: pepsipu / media reports
By GeekikiBot
