Microsoft has released 1 advisory and updates for 59 vulnerabilities. Of these vulnerabilities, 8 are classified as Critical. Two NTLM authentication vulnerabilities discovered by security firm Preempt were fixed today. Remote code execution bugs in the VBScript engine and one in the Remote Desktop client are also fixed. All users should install these security updates as soon as possible in order to protect Windows from known security risks. For information about the non-security Windows updates, you can read about today’s Windows 10 October 2019 Cumulative Updates and September Microsoft Office Updates.
Source: https://www.bleepingcomputer.com/news/microsoft/microsofts-october-2019-patch-tuesday-fixes-59-vulnerabilities/

