Except as otherwise provided with respect to consignments or sales of accounts, chattel paper, payment intangibles, or promissory notes, the provisions of this chapter with regard to rights and obligations apply whether title to collateral is in the secured party or the debtor.
Wis. Stat. § 409.202
The above annotated materials cite to the pre-2001 Wis. Act 10 version of s. 409.202.
A person with a voidable title in property, having the power to pass title to a good faith purchaser under s. 402.403, may transfer a security interest in that property. Return of Property in State v. Pippin, 176 Wis. 2d 418, 500 N.W.2d 407 (Ct. App. 1993).