Sharepoint

Microsoft SharePoint Server WS-Federation SecurityContextToken Deserialization → Unauthenticated RCE (CVE-2026-50522) new KEV EPSS 85%CVE-2026-50522webCRITICAL 9.8Patched2026-07-27ToolShell - SharePoint Unauthenticated RCE Chain new KEV RW EPSS 100%CVE-2025-53770, CVE-2025-53771, CVE-2025-49704, CVE-2025-49706webCRITICALPatched2026-05-17