Microsoft's July Patch Tuesday addressed a critical zero-day vulnerability: CVE-2026-56164. This remote elevation of privilege (EoP) exploit allows unauthenticated attackers to gain administrative access across Microsoft SharePoint Server networks by sending malicious POST requests.
For organizations running local SharePoint servers or hybrid cloud setups, failing to patch this vulnerability exposes internal communication channels, corporate files, and databases to risk.
At Sky Techiez, we focus on robust corporate data governance and migration safety. Here is how you can mitigate security issues and protect your company’s files.
Implementing the AMSI Mitigation Strategy
If you are unable to install the security patch immediately, Microsoft recommends enabling the Antimalware Scan Interface (AMSI) integration directly on your servers:
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Open the IIS (Internet Information Services) Manager on your SharePoint host server.
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Select your Web Application, navigate to request management, and enable AMSI Request Filtering.
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Set your Request Body Scan Mode to Full. This tells the system to scan incoming network payloads, blocking unauthorized malicious scripts.
Securing Your Microsoft 365 Cloud Workspace
Core Security Step Implementation Action Business Protection Apply CVE-2026-56164 Patches Force update cycles on internal web hosts Prevents unauthorized outside directory takeovers Enable Conditional Access Restrict SharePoint folder permissions to verified corporate IP ranges Blocks access if credentials are stolen from a public network Audit Third-Party Connectors Revoke historical, unused API hooks inside Azure AD / Entra ID Eliminates secondary backdoors into your corporate cloud directories
Modernize Your Cloud Infrastructure
Avoid the risks of legacy server hosting. Sky Techiez specializes in secure SharePoint configurations, cloud migrations, and remote network defense setups to keep your team connected and your files protected.
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