In the dynamic world of cryptocurrency, innovation is both a constant and a necessity. The recent advent of "ERC404" tokens—a hybrid aiming to blend the best of ERC20's fungibility with ERC721's uniqueness—promised to reshape how we interact with digital assets. However, this ambitious integration brought unforeseen challenges, exposing vulnerabilities in the shared functions between the two standards, notably in the transferFrom function. This function, pivotal in asset transactions, became a Pandora's box of security issues due to its redesign to accommodate parameters differently based on their values.