An IE problem IS a windows problem due to how ie/windows is architected.  You cannot remotely take over a machine with firefox unless you are running as admin.  You CAN take a over a machine if you are running IE even in non-admin mode due to IE being directly integrated into the lowest levels of the operating system.  So Microsoft got this one IS a windows problem because IE is now literally part of the core operating’s no longer just an extension that’s separate from userspace.

What Microsoft didn’t say about the latest Windows zero day flaw | Malware – InfoWorld.