Microsoft fixed 3 issues in MS09-050 which were critical or important on all relevant platforms.

But this is a critical SMB vulnerability that wasn’t fixed in MS09-050 as the article linked to explains.

From a practical perspective it is mostly irrelevant, in that anyone exposing protocols like SMB that are intended for office users, hasn’t got the idea of minimizing the exposed services. Although viruses could exploit some of these to spread within a network once in, most of these are DoS issues.

Such a large number of vulnerabilities being discovered before release, does suggest that Microsoft coding practices are not exceeding industry standards. The bigger story here is that they aren’t patching quickly when they know of issues, and they aren’t backporting to “supported” operating systems quickly.