Utah Code § 70C-2-205

With respect to a consumer credit sale, an assignee of the rights of the seller is subject to all defenses of the buyer against the seller arising out of the credit sale, but the assignee's liability under this section may not exceed the amount owing to the assignee at the time the defense is asserted against the assignee, and the rights of the buyer may only be asserted as a matter of defense to or setoff against a claim by the assignee.