Microsoft Defender Flaws Exploited on Windows, Two Left Unpatched

Although the team with Microsoft moved swiftly to patch the BlueHammer vulnerability, other exploits still threaten Microsoft ...
Windows Report

RedSun Exploit Hits Microsoft Defender Zero-Day, Grants SYSTEM Access

RedSun exploit targets Microsoft Defender zero-day, granting SYSTEM access on fully patched Windows systems with no patch ...

Over 1 billion Windows users at risk after disgruntled security research leaks Defender zero-days

The BlueHammer, RedSun and UnDefend flaws put all Windows users at risk since they turn the operating system’s antivirus ...

From the BlueHammer author: New Windows zero-day grants admin rights

The exploit uses an insecure behavior of Windows Defender and a file API to secure system rights. It is still unpatched.
Forbes

Microsoft Confirms Critical Windows Defender Security Vulnerability

A Dec. 12 posting to Microsoft’s security update guide has confirmed that a Windows Defender vulnerability, rated as critical according to Microsoft itself, could have enabled an attacker who ...