This indicates an attack attempt to exploit a Denial of Service vulnerability in Microsoft Windows.
The vulnerability is due to an error when the vulnerable software handles a maliciously crafted TrueType Font file. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted TrueType Font file.
Windows Server 2003
Windows Server 2008
Windows 2008 R2
Windows Server 2012
Denial of Service: Remote attackers can crash vulnerable systems.
Apply the most recent upgrade or patch from the vendor.