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Devastating news for the small handful of folks still playing online on their Wii U – the servers for both Mario Kart 8 and Splatoon are down, and it’s unclear when they’ll be back up. This “emergency temporary maintenance” is due to a security vulnerability, and an extended duration is expected with no clear time set for return.



The vulnerability is likely ENLBufferPwn, which would allow a hacker to take over your console simply by connecting to it online. Last year Nintendo released patches for Switch games that had the vulnerability, along with Mario Kart 7 on 3DS, but didn’t do so for these two Wii U titles despite them known to have the same issue. And now servers are down. 

Hopefully the issue gets resolved sooner rather than later so Wii U players can jump back into the action. Mario Kart 8 Deluxe and Splatoon 3 servers on Nintendo Switch continue to operate as normal.


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Written by Amelia Fruzzetti

A writer and Nintendo fan based in Seattle, Washington. When not working for NinWire, she can be found eating pasta, writing stories, and wondering about when Mother 3 is finally going to get an official localization.