The XML Editor in Microsoft InfoPath 2007 SP2 and 2010; SQL Server 2005 SP3 and SP4 and 2008 SP1, SP2, and R2; SQL Server Management Studio Express (SSMSE) 2005; and Visual Studio 2005 SP1, 2008 SP1, and 2010 does not properly handle external entities, which allows remote attackers to read arbitrary files via a crafted .disco (Web Service Discovery) file, aka "XML External Entities Resolution Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12664
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-049
http://www.securitytracker.com/id?1025648
http://www.securitytracker.com/id?1025647
http://www.securitytracker.com/id?1025646