There are multiple ways to get too much thrust (and too much is anything more than expected or commanded).
Stuck cockpit levers can be quite nasty if unrecognized and autothrottle is connected. However far worse are stuck fuel controls on engines. There are some failure modes where cockpit levers will no longer command the engine and instead the engine fails-safe to the last power setting or worse it simply runs up on its own to its max limit. All have happened.