Possible remote vulnerability problem in TIS FWTK x-gw?

Hello all, I got around to checking out TIS FWTK for format string problems. It's a free-for-non-commercials firewall proxy package. The sources etc. can be obtained from http://www.tis.com/research/software/fwtkreadme.html. Tried to contact [email protected], mail bounced. Oh well. This is usuall...