With Cumulative Update 9 and Update Rollup 10, Microsoft released updates for the entire range of supported Exchange...
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Server versions in June 2015: Exchange 2007, Exchange 2010 and Exchange 2013.
Unlike some previous Cumulative Updates (CUs), Exchange 2013 CU9 doesn't appear to add new functionality to the product. However, according to a previous blog post from the company, the behavior for Sent Items and Shared Mailboxes will soon change. With Microsoft prepping to release Exchange Server 2016 later this year, a lack of new features or major changes in functionality in the product shouldn't be surprising.
If you want to find out which issues are fixed in the Exchange 2013 CU9 release, Microsoft describes these fixes in more detail in its KB3049849 update.
CU9 notably includes the security update MS15-064, which was recently released. The security update fixes a vulnerability that would otherwise allow an attacker to increase privileges and compromise the host system, or use the host system to attack other systems within the same network. There is no need to separately install or uninstall the security fix before or after the upgrade to Exchange 2013 CU9.
Although Microsoft has been on path to deliver updates without issues, some caution is warranted with the latest cumulative update. Exchange experts have noted that the security fix included in Exchange 2013 CU9 allegedly caused issues for some customers. Test the update before installing it into your production environment -- this should already be your default approach.
Onward to Exchange 2016?
Don't take Exchange 2013 CU9 to mean that we should stop expecting any new features in the future and only focus on Exchange 2016. For example, at Ignite, Microsoft announced it would introduce a new Hybrid Configuration Wizard and would continue to improve the Public Folder performance and scalability for Exchange Server 2013.
Exchange 2010, Exchange 2007 updates
Microsoft also released Update Rollup 10 for Exchange Server 2010 Service Pack 3 and Update Rollup 17 for Exchange Server 2007 SP3. Neither update includes anything noteworthy to report. In fact, according to the official Knowledge Base article, Update Rollup 17 includes a single fix. Do look through what's included for the Exchange 2007 SP3 or Exchange 2010 SP3 updates, however, if you're deploying either version.
About the author:
Michael Van Horenbeeck is a Microsoft Certified Solutions Master and Exchange Server MVP from Belgium and works for ENow, a company that provides systems management software for Microsoft technologies. He specializes in Exchange, Office 365, Active Directory and a bit of Lync. He is an active contributor in the Exchange community by writing articles for several tech websites and his own blog and by participating in the UC Architects podcast. He frequently speaks at international conferences, including TechEd, IT/DEV Connections and the Microsoft Exchange Conference.
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