> Of the three remaining exploits [...] none reproduces on supported platforms, which means that customers running Windows 7 and more recent versions of Windows

> Of the three remaining exploits [...] none reproduces on supported platforms, which means that customers running Windows 7 and more recent versions of Windows or Exchange 2010 and newer versions of Exchange are not at risk. So none of the exploits should be a problem if you're on somewhat recent versions of Windows and Exchange (as applicable). If you're still on Windows Vista, XP, 2000 or NT, you likely have bigger problems already.