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LegacyHive PoC exposes a Windows Privilege Escalation flaw affecting fully patched Windows desktop and server systems. Just hours after Microsoft’s July 2026 Patch Tuesday, security researcher Nightmare Eclipse, also known as Chaotic Eclipse, published a new Windows zero-day proof-of-concept called LegacyHive. This time, the target is the Windows User Profile Service (ProfSvc), and unlike the […]

Security Affairs 16 Jul 2026, 4:57 a.m. Theme · 4 stories 0-Day Exploit Flaw Microsoft Patch Patch Tuesday PoC Privilege Escalation

CISA confirms BlueHammer (CVE-2026-33825) is now used in ransomware attacks to gain SYSTEM privileges through Microsoft Defender. BlueHammer, tracked as CVE-2026-33825, has moved from proof-of-concept noise to real ransomware attacks in the wild, the US CISA confirms. BlueHammer allows attackers to escalate privileges locally in Microsoft Defender. The vulnerability, along with two other zero-days dubbed […]

Security Affairs 1 Jul 2026, 11:26 p.m. Incident · 2 stories Actively exploited CVE-2026-33825 Antivirus CISA CVE Flaw Microsoft PoC Ransomware Vulnerability Warning

The researcher Chaotic Eclipse released a PoC for the RoguePlanet Microsoft Defender zero-day, which can grant SYSTEM privileges on fully patched Windows systems. Security researcher Chaotic Eclipse, also known as Nightmare-Eclipse, has published a new proof-of-concept exploit for a RoguePlanet Microsoft Defender zero-day. The flaw relies on a race condition that can provide attackers with […]

Security Affairs 10 Jun 2026, 9:45 p.m. Theme · 12 stories 0-Day Antivirus Exploit Flaw Microsoft Patch PoC