Are you having the same problem I've been having with Fedora 25 updates and something having to do with
I found the answer in the Fedora Forums:
You need to get rid of this old package first, then do the software upgrade:
$ sudo dnf remove system-config-firewall-base
Then do your usual upgrade, either in your favorite GUI (Whatever GNOME is using or yumex-dnf) or dnf in the terminal:
$ sudo dnf upgrade
This is very likely only an issue if you've been upgrading the same system since Fedora 21 (and I have).