Microsoft Defender Zero-Days Patched: RedSun, UnDefend Exploits Already Used in Live Intrusions
Source: Techtimes
Published:
<p>Microsoft pushed out-of-band patches on May 21, 2026, for two actively exploited Windows Defender zero-days — one that lets a low-privileged attacker seize full SYSTEM-level control of any Windows machine, and a second that can silently disable antivirus protection without alerting the user or ad