Checkmarx CxSAST (formerly CxSuite) before 7.1.8 allows remote authenticated users to bypass the CxQL sandbox protection mechanism and execute arbitrary C# code by asserting the (1) System.Security.Permissions.PermissionState.Unrestricted or (2) System.Security.Permissions.SecurityPermissionFlag.AllFlags permission.
http://www.securityfocus.com/archive/1/536387/100/0/threaded
http://packetstormsecurity.com/files/133437/Checkmarx-CxQL-7.1.5-Sandbox-Bypass.html