
🛡️ **MICROSOFT SHAREPOINT ZERO-DAY: AUTHENTICATION BYPASS DISCLOSED (CVE-2026-55040)**
Published Tuesday, July 14, 2026 at 07:41 AM PT BLUF: Rapid7 Labs and Microsoft jointly disclosed CVE-2026-55040, an unauthenticated authentication bypass in Microsoft SharePoint. This vulnerability is the first component of a chained exploit that achieves remote code execution when combined with a second, yet-to-be-patched vulnerability. Organizations running vulnerable SharePoint instances should prioritize immediate assessment and prepare for patching upon Microsoft’s release. DETAILS: ...








