The zero-day is a high-rated vulnerability that could allow an attacker to remotely execute code on the target computer and potentially gain complete control. Microsoft has warned Windows 10 users that a previously unknown, and therefore unpatched, security vulnerability is being exploited by cybercriminals. Additionally, Microsoft has confirmed that cybercriminals are known to be already exploiting CVE-2021-40444 and advises users to take speedy mitigation action until an official patch becomes available. Has windows operating system become a victim of cyberattacks ?