Microsoft Releases Mitigations and Threat Hunting Queries for SharePoint Zero-Day

Thousands of organizations worldwide face active cyberattacks targeting Microsoft SharePoint servers through two critical vulnerabilities, prompting urgent government warnings and emergency patches. Microsoft confirmed over the weekend that threat actors are actively exploiting two zero-day vulnerabilities in on-premises SharePoint servers, designated CVE-2025-53770 and CVE-2025-53771. The attacks, dubbed “ToolShell” by security researchers, have compromised dozens of […]

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