CVE-2021-0107 is a vulnerability that was discovered in January 2021. It affects the Windows Defender antivirus software on Windows 10 and Windows Server 2019 operating systems. This flaw can allow an attacker to bypass the security measures put in place by Windows Defender and execute arbitrary code with elevated privileges. The vulnerability requires the attacker to trick the user into opening a malicious file through social engineering techniques, such as phishing emails or fake download links.
Microsoft released a security patch for CVE-2021-0107 on February 9, 2021, which addresses the issue and prevents attackers from exploiting the vulnerability. Users are encouraged to install the patch immediately to protect their systems from potential attacks. Microsoft recommends that users enable automatic updates to ensure that their systems remain secure against known vulnerabilities.
As is common with many vulnerabilities, it is difficult to determine whether CVE-2021-0107 has been actively exploited in the wild. However, given the severity of the vulnerability, it is important for organizations to take proactive measures to ensure that their systems are protected. This includes keeping antivirus software up-to-date, educating employees about social engineering techniques, and implementing additional security measures such as multi-factor authentication and endpoint detection and response solutions.