Microsoft Patches SharePoint RCE Flaw CVE-2026-45659 Across Server Versions

Microsoft released patches for a high-severity remote code execution vulnerability in SharePoint (CVE-2026-45659, CVSS 8.8) that can be triggered by an authenticated user with minimum Site Member permissions and does not require administrative privileges; Microsoft credited researcher MEOW and recommends applying updates despite stating the flaw is less likely to be exploited in the wild.