Microsoft rolls out security patches to contain a total of 71 vulnerabilities in Microsoft Windows and other software. Two of the addressed security flaws are rated Critical, 68 are rated Important, and one is rated Low in severity. At the top of the list is CVE-2021-40449, a use-after-free vulnerability in the Win32k kernel driver discovered by Kaspersky as being exploited in the wild in late August and early September 2021 as part of a widespread espionage campaign targeting IT companies, defense contractors and diplomatic entities.”]
Source: https://thehackernews.com/2021/10/update-your-windows-pcs-immediately-to.html