Neb. Rev. Stat. § 25-210

No action shall be maintained against the sureties in any bond given by a guardian unless it be commenced within four years from the time when the guardian shall have been discharged; Provided, if at the time of such discharge the person entitled to bring such action shall be out of the state, or under any legal disability to sue, the action may be commenced at any time within five years after the return of such person to the state, or after such disability shall be removed.