This indicates an attack attempt to exploit an Information Disclosure vulnerability in Microsoft Windows.
The vulnerability is due to an error in the Windows Common Log File System (CLFS) driver when running a crafted application. A remote attacker may be able to exploit this to gain sensitive information from vulnerable systems.
Windows Server 2008
Windows Server 2008 R2
Windows Server 2012
Windows Server 2012 R2
Windows RT 8.1
Windows Server 2016
Information Disclosure: Remote attackers can gain sensitive information from vulnerable systems.
Apply the most recent upgrade or patch from the vendor.