September 7 Laurent Gaffié on your blog published a code to attack resulting in the BSOD, soon after the exploit was created to take advantage of vulnerabilities to remote code execution. Uses the error code smb2.0 negotiations has been processed for many languages ​​(Python, C # etc.) and as a module for applications such as Metasploit.

The component responsible for the gap is srv2.sys, subroutine contained in it after receiving the request to establish proper communication (NEGOTIATE PROTOCOL REQUEST) finishes its work, causing a system error PAGE_FAULT_IN_NONPAGED_AREA.

Affected are all new systems using SMB2.0 (both Windows client and Windows Server), including their most recent versions such as Windows 7

At the moment the only possible defense to exclude the provision or use a tool FixIt (KB975497) published September 17 by Microsoft smb2.0 off.