IIS

ToolShell - SharePoint Unauthenticated RCE Chain new KEV RW EPSS 100%CVE-2025-53770, CVE-2025-53771, CVE-2025-49704, CVE-2025-49706webCRITICALPatched2026-05-17Exchange Health Checker Outbound Rule Blind Spot (CVE-2026-42897) new KEV EPSS 71%CVE-2026-42897webMEDIUM 5.3Unverified2026-05-15