Microsoft has released updates to address multiple vulnerabilities in Microsoft software. Microsoft has fixed 74 vulnerabilities with Microsoft's October 2021 Patch Tuesday, with three classified as Critical, 70 as Important, and one as Low.

Of the fixed vulnerabilities: 21 are elevation of privilege vulnerabilities, 6 are security feature bypass vulnerabilities, 20 are remote code execution vulnerabilities, 13 are information disclosure vulnerabilities, 5 are denial of service vulnerabilities, 9 are spoofing vulnerabilities

October's Patch Tuesday includes fixes for four zero-day vulnerabilities:

CVE-2021-40449 - Win32k Elevation of Privilege Vulnerability

CVE-2021-40469 - Windows DNS Server Remote Code Execution Vulnerability

CVE-2021-41335 - Windows Kernel Elevation of Privilege Vulnerability

CVE-2021-41338 - Windows AppContainer Firewall Rules Security Feature Bypass Vulnerability.

More information on vulnerabilities and updates is available in the Microsoft’s October 2021 Security Updates page – microsoft.com.

Source: bleepingcomputer.com