In the January 2015 Patch Tuesday update the .Net Framework 4.5.2 is included as an update to all supported platforms. Category: Feature Packs.
If you haven’t tested .NET Framework 4.5.2 with your applications already and you are building your images and pulling the updates for those images from Windows Update Directly you need to exclude the .NET Framework 4.5.2.
I wrote a post on this a while ago so just replace the KB article with the one for .NET framework 4.5.2 in this post. http://ccmexec.com/2014/06/exclude-net-framework-4-5-1-building-images-using-windows-update/
Some more information about .NET Framework 4.5.2:
What’s new in .NET Framework 4.5.2 http://msdn.microsoft.com/en-us/library/ms171868%28v=vs.110%29.aspx#v452
Known issues with .NET Framework 4.5.2 http://support2.microsoft.com/kb/2962547/en-us