كتب : Hatem Maher
Romania striker Adrian Mutu put the hosts ahead after 11 minutes after capitalizing on some slack marking from Massimo Oddo.
He ghosted behind the Italian full-back to convert Alberto Gilardino's neat cross from close range.
Bayern midfielder Tim Borowski secured a share of spoils 12 minutes from time.
Franck Ribery's pass beat the offside trap and found the unmarked Borowski, who slotted past Sebastien Frey.
Bundesliga holders Bayern are in charge of Group F with eight points. They have a better goal difference than second-placed Lyon, who defeated Steaua Bucharest 2-0 at home.
Two goals from Juninho and Anthony Reveillere either side of the interval gave the French champions their second win in the group stage.
Watch Fiorentina-Bayern match goals