Vulnerabilities Microsoft Patches Exploited UnDefend and RedSun Defender Zero-Days The bugs could be exploited to elevate privileges to System or create a denial-of-service (DoS) condition. Ionut ArghireMay 21, 2026
Vulnerabilities Recent Microsoft Defender Vulnerability Exploited as Zero-Day The flaw allows attackers to access the SAM database, extract NTLM hashes, and gain System privileges. Ionut ArghireApril 23, 2026