Unspecified vulnerability in Oracle VM VirtualBox 4.0 allows local users to affect confidentiality, integrity, and availability via unknown vectors.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12983
http://www.us-cert.gov/cas/techalerts/TA11-201A.html
http://www.securitytracker.com/id?1025805
http://www.oracle.com/technetwork/topics/security/cpujuly2011-313328.html