CVE-2026-58644: Microsoft SharePoint Server Unauthenticated Remote Code Execution Vulnerability Exploited in the Wild

Overview On July 14, 2026, Microsoft published a security advisory addressing CVE-2026-58644, a critical remote code execution RCE vulnerability affecting on-premises Microsoft SharePoint Server deployments. The vulnerability, which carries a CVSS v3.1 score of 9.8 Critical, results from the...