CyberICT

CVE-2026-64921

Microsoft · Published August 11, 2026

CVSS v3.1

HIGH
Patch availableGet patch

Description

Microsoft SharePoint Server Elevation of Privilege Vulnerability. Missing authentication for critical function in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

Affected Products

  • Microsoft SharePoint Enterprise Server 2016
  • Microsoft SharePoint Server 2019
  • Microsoft SharePoint Server Subscription Edition

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C