The WannaCry Ransomware Attack used that Vulnerability in the SMBv1 implementation with an EternalBlue Exploit. I thing there is more to come! so my advice is to deploy critical updates as fast as possible, nothing new! And I told everyone to avoid the SMBv1 usage (by remove the support), like Microsoft did a few weeks ago.
Here is how to do that.
Another option: Use DSC to enforce the SMBv1 removal.
If you don’t have DSC (and ask yourself: Why not!!!) in place, you can use DSC local on your servers as well:
Here is the DSC MOF file (just an example):
You can use a Group Policy, for Clients and Servers, as well. something I forget to mention!