In computing|lang=en terms the difference between utility and exploit
is that
utility is (computing) a software program designed to perform a single task or a small range of tasks, often to help manage and tune computer hardware, an operating system or application software while
exploit is (computing) a program or technique that exploits a vulnerability in other software.
As nouns the difference between utility and exploit
is that
utility is the state or condition of being useful; usefulness while
exploit is a heroic or extraordinary deed.
As a verb exploit is
to use for one’s own advantage.