Some folks have asked me why they are not able to find KB 907245 in the Distribute Software Updates Wizard when approving the October security bulletins from Microsoft. This one is a bit tricky, because the master KB number for MS05-048 is 907045. However, the vulnerability actually affects two distinct Microsoft products: Windows and Exchange. The fix for each is listed under separate KB numbers. So if you are looking to approve and deploy the fix for Windows, search under KB 901017. If you are looking to approve and deploy the fix for Exchange 2000, search under 906780.