CVE-2026-56164: Unauthenticated SharePoint Zero-Day Grants Farm Administrator Access
Microsoft released patches for over 570 vulnerabilities in its July 2026 Patch Tuesday, the largest security update in the company’s history, including two zero-days already under active exploitation. Among them, one stands out for how it is being exploited right now: an unauthenticated vulnerability in SharePoint Server that allows an unauthenticated attacker to elevate privileges to Farm Administrator.