Researchers at penetration testing firm Immunity have created a reliable remote exploit capable of spawning a worm through an unpatched security hole in Microsoft s dominant Windows operating system. The exploit hits all versions of Windows Vista and Windows Server 2008 SP2. Microsoft recommends that users disable SMB v2 and block TCP ports 139 and 445 at the firewall. The vulnerability, which was originally released as a denial-of-service issue, does not affect the RTM version of Windows 7, Microsoft said.
Source: https://threatpost.com/remote-exploit-released-windows-vista-smb2-worm-hole-091809/72220/