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VU
CRITICAL
Vulnerabilities
CVE-2026-33825: BlueHammer Zero-Day in Microsoft Defender Exploited by Ransomware
Analysis of the BlueHammer zero-day, CVE-2026-33825, in Microsoft Defender, actively exploited by ransomware groups. Learn detection and mitigation strategies.
Runtime Rebel Intel
4 min read·Jul 1, 2026
VU
HIGH
Vulnerabilities
CVE-2026-33825: Microsoft Defender Access Control Exploit Analysis
CISA adds CVE-2026-33825 to the KEV catalog following active exploitation of Microsoft Defender's access control mechanisms. Learn how to secure your systems.
Runtime Rebel Intel
4 min read·Apr 23, 2026