MS06-078 - Install the patch even if it says Media player 6.4 and you are on a newer version
During the December updates, I almost "unselected" MS06-078, as it referenced an update for Media Player 6.4 in the title information and at 1st I felt it might even impact my Media Player 11 environment. Still I decided to install this and when I saw the same reference to MP 6.4 in updating other PCs, I knew all was well
This is actually documented in the FAQs. Apparently, MP 6.4 "lives" on your PC for compatibility reasons even if you're on the latest and greatest version.
MS06-078 - Please see FAQ section
I have installed Windows Media Player 11 on my computer. Why am I being offered the Windows Media Player 6.4 security update?
While Windows Media Player 11 is not vulnerable, Windows 2000 Service Pack 4, Windows XP Service Pack 2, Windows XP Professional x64 Edition, Microsoft Windows Server 2003 or on Microsoft Windows Server 2003 Service Pack 1 and Microsoft Windows Server 2003 x64 Edition will still have Windows Media Player 6.4 installed on the system for backwards compatibility.