"This month’s Patch, er sorry, Update Tuesday includes fixes for 50 high-impact vulnerabilities in Microsoft Windows – 11 of which were rated Critical and 39 Important.
The majority of the Critical bugs patched in this update affect the Edge browser, while most of the Important bugs belonged to Windows 10.
One of the more interesting Windows 10 fixes in this update was a Cortana bug (CVE-2018-8140) that allowed an attacker to bypass the Windows lock screen entirely, accessing private data on the machine, and even running executables."
Read the rest of the article on naked security by Sophos.