Security researchers at Avecto analyzed data issued by Microsoft via the Security Update Guide throughout 2017. The number of reported Microsoft vulnerabilities increased 111% between 2013 and 2017. In total, 587 vulnerabilities were reported across Windows Vista, Windows 7, Windows 8/RT 8.1, and Windows 10 over the course of last year. There has been a 54% increase in Critical Microsoft vulnerabilities reported since 2016, and a 60% increase over the 2013-2017 timeframe. The report states 80% of Critical vulnerabilities reported in 2017 could have been mitigated if admin privileges were taken away.”]
Source: https://www.darkreading.com/cloud/windows-10-critical-vulnerability-reports-grew-64-in-2017