🛡️ 🔴 BREAKING — RoguePlanet Zero-Day in Microsoft Defender Enables SYSTEM-Level Privilege Escalation; No Patch Available
Published Wednesday, June 17, 2026 at 05:16 AM PT BLUF: A zero-day vulnerability dubbed “RoguePlanet” has been publicly disclosed affecting Microsoft Defender. Public proof-of-concept (PoC) exploit code is available and exploits a race condition to spawn a command prompt with SYSTEM privileges. Microsoft is working on a patch; none is currently available. All systems running Microsoft Defender should be treated as at elevated risk until a fix is released. ...