Vaughn played in four games his first year at Utah in 2020 and had one interception. In 2021, he played in 13 games with four starts and recorded 24 tackles. In 2022, he had seven starts in 14 games and finished with 25 tackles. Vaughn started all 13 games in 2023, recording 53 tackles and one interception. He returned to Utah for the 2024season.