
🛡️ **BREAKING: Microsoft Defender Zero-Day (ShieldBreak) Allows Local SYSTEM Privilege Escalation**
Published Monday, August 17, 2026 at 04:25 AM PT BLUF: Microsoft Defender contains a zero-day vulnerability tracked as “ShieldBreak” that allows local attackers to escalate privileges to SYSTEM level. The flaw bypasses Microsoft’s prior RoguePlanet patch. Microsoft is actively developing a fix; no timeline or CVE assignment confirmed yet. Organizations should treat this as critical if systems allow untrusted local access. ...








