I talked about the flaw that allowed Vista to fall in the Pwn2Own competition this year very briefly but I never did get into much detail. But since Adobe has admitted the flaw exists in another Adobe product it is worth bringing up again.
Adobe, although they have admitted to the flaw, has not given a time line for fixing the affected applications with include Acrobat (Reader as well) 9.1, 8.1.4, 7.1.1 and earlier.
Read more here
Initially the firm said the vulnerability only afflicted its cumbersome Reader.
Adobe Reader and Acrobat versions 9.1, 8.1.4, and 7.1.1 and earlier are vulerable. Adobe said it hadn't found any live expolits yet.