Microsoft has released fixes for 113 vulnerabilities in Microsoft products. Of these vulnerabilities, 15 are classified as Critical, 93 as Important, 3 as Moderate, and 2 as Low. Of particular interest, Microsoft patched three zero-day vulnerabilities, with two of them being seen actively exploited in attacks. Users should install these security updates as soon as possible to protect Windows from known security risks. For information about the non-security Windows updates, you can read about today’s Windows 10 KB4549951 & KB4549 cumulative updates.
Source: https://www.bleepingcomputer.com/news/microsoft/microsoft-april-2020-patch-tuesday-fixes-3-zero-days-15-critical-flaws/