A developer who goes by pepsipu says they have jailbroken the Nintendo Switch 2 without touching the hardware at all. The exploit, called ns2jb, reportedly works on console firmware 23.0.1 and needs no modchip, no soldering, nothing physical. Just code.
To show it off, pepsipu loaded modified content into Mario Kart World, the Switch 2 exclusive racer, and slipped in characters that have no business being there: Cinnamoroll, Hatsune Miku, Peter Griffin and Red from Angry Birds. It's a goofy demo, but the point underneath it is serious. Pepsipu says ns2jb grants native code execution with elevated system access, the kind of foothold that matters for homebrew development, game preservation research, save file backups and modding.
There's a catch, and it's a big one. Ns2jb is tethered, meaning the jailbreak lives only in memory while the console stays on. Reboot the Switch 2 and the exploit is gone, the affected processes snap back to normal, and you're starting from zero. This is not a persistent custom firmware setup, and nothing here lets someone pirate games or bypass Nintendo's protections on a lasting basis. It's a proof of concept, not a finished tool.
How the exploit reportedly works
According to pepsipu's technical writeup, the path in runs through the Switch 2's backward compatibility layer, specifically a vulnerability tied to how the original Switch's version of SmileBASIC behaves when it runs on the newer console. SmileBASIC is a programming and game-creation app that's been on Nintendo hardware for years, and apparently its Switch 1 build still carries weaknesses when executed through the Switch 2's compatibility mode. Chaining those weaknesses together, pepsipu says, eventually produced code execution at a system permission level well above what a normal game should have.
The claim isn't coming from nowhere. Gezine, a developer who separately disclosed a universal exploit affecting both the original Switch and the Switch 2 earlier, told Notebookcheck he spoke directly with pepsipu about the work and that it "seems legit." Gezine also noted he's a different find from his own userland exploit, meaning two separate researchers appear to have stumbled onto two separate weak points in the same console generation within a short span.
Nintendo hasn't commented on ns2jb, and there's no indication yet of a patch targeting this specific chain. Given how fast the company has historically moved to close these doors, firmware past 23.0.1 is the thing to watch. If pepsipu's full writeup holds up to outside scrutiny, it won't hand anyone a working custom firmware scene overnight. But it does mean the Switch 2, barely out for a year, already has a documented crack in its armor. What happens next depends on whether other developers can turn a one-off, reboot-killed exploit into something that sticks around.
GDFiled by The Games Desk
Consoles, handhelds, PC gaming and the platforms and hardware behind them.
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