We have come accross this vulnerability detected by our scanner tool for this software. The software gets install in the folowing area
C:\Program Files\Microsoft\Exchange Server\V14\Bin\MSExchangeMailboxAssistants.exe
This windows services is unquote and therefore it flags as vulnerable for hackers.
I'm attachingthe following article for reference
https://isc.sans.edu/diary/Help+eliminate+unquoted+path+vulnerabilities/14464
http://blakhal0.blogspot.com/2012/08/hiding-files-by-exploiting-spaces-in.html
Besides creating a script to update the binPath for this services, is there a patch solution or this is simple not a problem since the OS will take care of it. Issue of long file name was fixed back then by Microsoft Windows 2000 SP2.