Consider the following scenario:
- You have a Microsoft Exchange Server 2010 server that has a public folder store installed in an Exchange organization.
- You connect to the public folder store by using Outlook 2003.
- You create a meeting request, and then you try to view the free/busy information.
This issue occurs because the Microsoft Exchange RPC Client Access service does not verify whether a variable is NULL before it accesses the variable.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.