This is... Funny.
It looks like IE is just a little bit more evil than we thought. So pretty much, IE is all screwed up when it comes to accessing deleted memory or improperly allocated items, but the result is that a hacker could get the computer to execute some "fun" code. I guess if your a hacker, you'd better hurry up and cut hay while the sun shines... Is that how the saying goes? Never mind... You get the point.
https://technet.microsoft.com/en-us/library/security/2963983.aspx