There are 50 critical security fixes are reported in this February patches for Explorer (IE), Microsoft Edge, ChakraCore, Microsoft Windows, and Microsoft Office. Out of 5o Vulnerability, 14 are listed as Critical, 34 are rated Important, and 2 are rated Moderate in severity. Microsoft Additionally released Meltdown and Spectre Vulnerability patches for Apple iOS 11.2.1.1 and Acrobat Reader and Experience Manager. The Reader update resolves 17 Critical and 24 Important severity bugs. Apple released a Critical Security Patch for iOS 11.”]
Source: https://gbhackers.com/microsoft-released-security-patch/