Microsoft Windows Networking Authentication RCE Flaws | MSSP Advisory

Microsoft's new AI-powered security system MDASH discovered 16 vulnerabilities in Windows networking and authentication components, with four classified as critical remote code execution flaws. Two specific vulnerabilities, CVE-2026-40361 and CVE-2026-40364, are flagged by Microsoft as having higher exploitation likelihood. The flaws target core Windows networking and authentication stack components that handle network communications and user authentication processes.

Your RMM agents and remote access tools running on Windows endpoints become attack vectors if these RCE flaws get exploited, potentially giving attackers direct access to your entire client management infrastructure. Every Windows machine your clients run becomes a potential entry point for lateral movement, and you need to communicate patch urgency before someone else discovers these same attack paths.

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