Micky Adams celebrated his first win as boss at Bramall Lane thanks to a second half fightback which yielded goals from Vokes and Lowton and also saw Bogdanovic miss a penalty.
Dele Adebola had given Nottingham Forest the lead on 42 minutes but the Reds now lie in 6th place in the Championship as their blip in form continues.
Reaction to follow on Forest Mad.