CVE-2026-58277

HIGH

Microsoft SharePoint Elevation of Privilege Vulnerability

Title source: cna
STIX 2.1

Description

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

References (1)

Core 1
Core References
Vendor Advisory vendor-advisory patch
Microsoft SharePoint Elevation of Privilege Vulnerability
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58277

Scores

CVSS v3 8.8
EPSS 0.0089
EPSS Percentile 55.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-285
Status published
Products (4)
Microsoft/Microsoft SharePoint Enterprise Server 2016 16.0.0 - 16.0.5561.1001
Microsoft/Microsoft SharePoint Server 2019 16.0.0 - 16.0.10417.20175
microsoft/sharepoint_server 2016
microsoft/sharepoint_server 2019
Published Jul 14, 2026
Tracked Since Jul 14, 2026