This indicates an attack attempt to exploit an Information Disclosure vulnerability in Microsoft Search Service.
The vulnerability is due to an error when the vulnerable software attempts to handle maliciously crafted packet. A remote attacker can exploit this to gain unauthorized access to sensitive information, leading to further attacks.
Microsoft Windows 8.1
Microsoft Windows 10
Microsoft Windows RT 8.1
Microsoft Windows 7
Microsoft Windows Server 2012
Microsoft Windows Server 2008
Microsoft Windows Server 2016
Information Disclosure: Remote attackers can gain sensitive information from vulnerable systems.
Apply the most recent upgrade or patch from the vendor.