Serialized-object interfaces in certain IBM analytics, business solutions, cognitive, IT infrastructure, and mobile and social products allow remote attackers to execute arbitrary commands via a crafted serialized Java object, related to the InvokerTransformer class in the Apache Commons Collections library.
https://www.exploit-db.com/exploits/41613/
http://www.securitytracker.com/id/1035125
http://www.securityfocus.com/bid/77653
http://www-01.ibm.com/support/docview.wss?uid=swg21972799
http://www-01.ibm.com/support/docview.wss?uid=swg21971758
http://www-01.ibm.com/support/docview.wss?uid=swg21971733
http://www-01.ibm.com/support/docview.wss?uid=swg21971376