Microsoft Defender Elevation of Privilege Vulnerability: CVE-2026-50656
Introduction In modern operating systems, antivirus and protection engines form the most critical layer of system security. However, by design, these software components must operate with the highest possible system privileges (NT AUTHORITY\SYSTEM). This fundamental necessity turns security engines into a primary and highly lucrative target for cyber adversaries. The local elevation of privilege (EoP) vulnerability identified within Microsoft Defender, publicly dubbed “RoguePlanet” and tracked as CVE-2026-50656, directly