The unnamed kid admitted to two felony counts in connection with hoaxes relating to the Kutcher joke and another on a Los Angeles bank, reported TMZ online.
The pre-teen made a crank 911 call, claiming there were people inside the actor's home with guns and explosives and that several people had been shot.
The boy was also charged with 'swatting' Justin Bieber but did not admit to that count.
The kid has been returned to his parents and faces sentencing soon.