An unpatched vulnerability in Windows SMB 2.0 file servers can be used to crash any Windows Vista or later Windows OS which has the SMB service enabled and accessible. There is no patch for this vulnerability as yet. Microsoft has published an advisory, stating that, contrary to earlier reports, Windows 7 and Windows 2008 RC2 are not vulnerable. The advisory recommends blocking ports on the perimeter firewall and disabling SMB on the internal network (which is a polite way of saying there is no fix yet)”]
Source: https://www.bitdefender.com/blog/hotforsecurity/smb-2-0-flaw-triggers-bsod/