This indicates an attack attempt to exploit an Information Disclosure vulnerability in Microsoft Windows.
This vulnerability is due to an error when the affected application handles maliciously crafted file. A remote attacker may be able to exploit this to gain access to sensitive information, via a crafted file.
Windows Server 2008
Windows Server 2008 R2
Windows Server 2012
Windows Server 2012 R2
Windows Server 2016
Information Disclosure: Remote attackers can gain sensitive information from vulnerable systems.
Apply the most recent upgrade or patch from the vendor.