This Swedish hacker is said to be the one who stumbled across the so-called “rootpipe” vulnerability in other previous OS versions from Apple. It seems that making several minor modifications would then enable such a similar exploit where Yosemite is concerned.
With “rootpipe”, someone with malicious intent will be able to obtain root privileges from an administration account, and will be able to run sudo commands so that it is possible to bypass the standard security measures that are taken by the OS itself. It seems that Apple will most likely patch this particular law some time in January next year, so it might be wiser to make sure you conform to the standard issue safety recommendations. It looks like when it rains, it pours for Yosemite.