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> I'm not sure how or what you're counting.

The recent two. FailCopy and DirtyFrag and FreeBSD with Execve.

2 - Linux 1 - FreeBSD.

Of course, all OS have had past-time exploits. Three now have made the news.

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> 2 Linux

Three. I don't know if this has a name yet... https://news.ycombinator.com/item?id=48067734

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Your question was "how many high profile privilege escalations Windows has had recently" then? I can't think of any, 0?
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