[tanzam75]

You can't make blanket statements like that. It depends on where the vulnerability is.

For example, Vista has a substantially-rewritten networking stack. A networking exploit in Vista would not necessarily translate over to XP.

On the other hand, there's a lot of legacy code around in GDI+ for decoding graphics formats. A file format exploit would be highly likely to carry over to XP.

[korethr]

Fair enough. I misunderstood the parent when posting that. Re-reading it and your comment, it makes more sense.

That makes me curious as to just how much legacy code still exists in Vista/7/8/8.1, and where. I guess it's time for me to do some more research.