August 13, 2026
ShieldBreak Turns a "Patched" Defender Bug Back Into SYSTEM
Microsoft Defender flaw CVE-2026-50656 was bypassed by a new ShieldBreak proof-of-concept that grants SYSTEM privileges on fully patched Windows 11 and Server 2025. SharePoint authentication-bypass CVE-2026-55040 is now actively exploited in the wild, allowing attackers to forge JWT tokens and impersonate admin users. LiteLLM malicious PyPI releases exposed over 2,100 organizations to credential-stealing code that harvested cloud keys, SSH credentials, and database passwords in a supply-chain attack traced to an earlier Trivy compromise. Midnight Blizzard (APT29) weaponized hotel Wi-Fi captive portals through CaptiveCrunch to harvest Microsoft 365 credentials and deploy malware.