DeAndre Kane tallied 19 points and seven assists, D.D. Scarver scored 16 points and Dennis Tinnon added 14 points and 15 rebounds for the Thundering Herd, who shot a season-high 54.2 percent (32 of 59).
Marshall (12-15, 5-7 Conference USA) led 23-19 before Tinnon sandwiched two jumpers around a Pittman 3-pointer to put the Thundering Herd up for good. Marshall took a 48-34 lead into intermission behind a 60 percent (21 of 35) first-half shooting effort and never led by less than eight from there.
Pittman, Scarver, Kane and Tinnon all managed at least 10 points in the first half.
Isaiah Sykes had 23 points and 11 rebounds for UCF (17-9, 7-5), which shot 43 percent (28 of 65), but struggled from 3-point range (3 of 16).