The remote Windows host contains an application that is susceptible to buffer overflow attacks.
The remote host is running avast! Server Edition or Managed Client. The version of the avast! product installed on the remote host is reportedly prone to a heap-based overflow in its CAB and SIS file processing code. An attacker may be able to exploit these issues to execute arbitrary code on the remote host, likely with LOCAL SYSTEM privileges.
Upgrade to avast! Server Edition 4.7.766 / avast! Managed Client 4.7.700 or later.