The Vikings (18-3, 7-2 Horizon League) held Wright State to 26.8 percent shooting (11 of 41) in winning a school-record 14th straight game at the Wolstein Center.
Cleveland State, which jumped out to a 9-2 lead and led the entire way, outrebounded the Raiders 39-20.
The Vikings turned it over 17 times but overcame that at the free-throw line. Cleveland State made 92 percent from the line (23 of 25), including 16 of 16 in the second half.
Vaughn Duggins scored 14 points to lead Wright State (13-8, 6-3), which had won six of seven heading in.