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Microsoft confirmed the RoguePlanet Defender zero-day (CVE-2026-50656), a privilege escalation flaw, and is developing a security patch. Microsoft has acknowledged the RoguePlanet zero-day affecting Microsoft Defender, tracked as CVE-2026-50656 (CVSS score of 7.8). The vulnerability allows privilege escalation through the Microsoft Malware Protection Engine. The company stated it is aware of the issue and is […]

Security Affairs 18 Jun 2026, 9:21 p.m. Theme · 12 stories CVE-2026-50656 0-Day Antivirus CVE Flaw Malware Microsoft Patch Privilege Escalation Vulnerability

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