Camera mount in the insulated facade (corner)

Hello, we are building, the house has an insulated facade with 25cm thick EPS. We just wanted to hang a camera on one of the corners of the house on the facade. The camera weighs about 8kg and should hang on a 39cm long bracket. Unfortunately, all the mounts I can find for a corner installation are so short that they would only be fixed in the EPS and not in the wall. Would the corner of the facade be stable enough for this? Best regards