This indicates an attack attempt to exploit a Buffer Overflow vulnerability in Microsoft Visual Basic.
This issue is caused by an error in the vulnerable software when handling a malformed DSR file with an overlong "ConnectionName" or "CommandText" field. It may allow remote attackers to execute arbitrary code by sending a crafted DSR file.
Microsoft Visual Basic Enterprise Edition 6
System Compromise: Remote attackers can gain control of vulnerable systems.
Currently we are not aware of any vendor supplied patch for this issue.