PT-2026-58639 · Microsoft · Sharepoint Enterprise Server 2016+1

Published 2026-07-14 · Updated 2026-07-14 · CVE-2026-58277

NVD

CVSS v3.1

8.8

High

Base vector

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

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

Fix

Improper Authorization

Weakness Enumeration

CWE-285

Related Identifiers

CVE-2026-58277

Affected Products

Sharepoint Enterprise Server 2016

Sharepoint Server 2019

References · 2

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58277 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-58277 · Security Note