The remote HTTP proxy is affected by a buffer overflow vulnerability.
The remote host is running WinProxy, a proxy server for Windows. The version of WinProxy installed on the remote host reportedly contains a design issue that may result in a buffer overflow vulnerability. Using a specially-crafted HTTP CONNECT request, a remote attacker may be able to leverage this issue to execute arbitrary code on the affected host subject to the privileges under which the service runs.
Upgrade to version 6.1 R1c or higher.