This sounds contradictory: "Only Windows 7 x64 systems patched with the 2018-01 or 2018-02 patches are vulnerable. If your system isn't patched since December

This sounds contradictory: "Only Windows 7 x64 systems patched with the 2018-01 or 2018-02 patches are vulnerable. If your system isn't patched since December 2017 or if it's patched with the 2018-03 patches or later it will be secure." "I discovered this vulnerability just after it had been patched in the 2018-03 Patch Tuesday. I have not been able to correlate the vulnerability to known CVEs or other known issues."