FreeRDP before 1.1.0-beta+2013071101 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) by disconnecting before authentication has finished.
https://github.com/FreeRDP/FreeRDP/commit/0773bb9303d24473fe1185d85a424dfe159aff53
http://www.securityfocus.com/bid/61072