Critical Sharepoint 0-Day Vulnerablity Exploited CVE-2025-53770 (ToolShell), (Sun, Jul 20th)

Microsoft announced yesterday that a newly discovered critical remote code execution vulnerability in SharePoint is being exploited. There is no patch available. As a workaround, Microsoft suggests using Microsoft Defender to detect any attacks. To use Defender, you must first configure the AMSI integration to give Defender visibility into SharePoint. Recent versions of SharePoint have the AMSI integration enabled by default.