PT-2026-58556 · Microsoft · Sharepoint Enterprise Server 2016+2

Published 2026-07-14 · Updated 2026-07-14 · CVE-2026-55052

Mitre

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2026-55052

Affected Products

Sharepoint Enterprise Server 2016

Sharepoint Server 2019

Sharepoint Server Subscription Edition

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-55052 · Security Note
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55052 · Vendor Advisory