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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 […]

More from 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

Threat actors with links to the Play ransomware family exploited a recently patched security flaw in Microsoft Windows as a zero-day as part of an attack targeting an unnamed organization in the United States

More from The Hacker News 7 May 2025, 10:44 p.m. Actively exploited CVE-2025-29824 0-Day America Antivirus Breach CVE Flaw Microsoft Patch Privilege Escalation Ransomware Symantec Threat Actor