Microsoft issued the February 2020 Security Updates that include 101 unique vulnerability fixes, 13 of those rated critical. The update also includes a patch for an IE zero-day scripting engine vulnerability CVE-2020-0674 disclosed in January.
Microsoft issued the December 2019 Security Updates that include 36 unique vulnerability fixes, 7 of those rated critical and 29 rated important. One of the patches addresses a Win32k vulnerability under active attack in the wild.
Microsoft issued the August 2018 Security Updates that include over 60 unique vulnerability fixes, 19 of them rated critical and two zero days actively exploited.