It's possible toexecute code without authentication with RPC request UUID 4b324fc8-1670-01d3-1278-5a47bf6ee188 to browser service via SERVER (LanmanServer) service, TCP/139, TCP/445.
Reccomendation is to disable browser service.
CVE-2008-4250 (The Server service in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, Server 2008, and 7 Pre-Beta allows remote attackers to execute arbitrary code via a crafted RPC request that triggers the overflow during path canonicalization, as exploited in the wild by Gimmiv.A in October 2008, aka "Server Service Vulnerability.")