CVE-2026-58277: Microsoft SharePoint Elevation of Privilege Vulnerability
Published Jul 14, 2026
·Updated
Improper authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
Other sources
Microsoft SharePoint Elevation of Privilege Vulnerability
— Microsoft
Affected Software
4 affected componentsFixes available
Microsoft SharePoint Enterprise Server 2016<16.0.5561.1001
16.0.5561.1001
Microsoft SharePoint Server 2019<16.0.10417.20175
16.0.10417.20175
Microsoft SharePoint Server=2016
Microsoft SharePoint Server=2019
Remediation
Event History
Jul 14, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Affected Software
Updated
via Microsoft·02:00 PM
Description
CVE Published
via MITRE·05:09 PM
Data Sourced
via MITRE·05:09 PM
DescriptionSeverity
Data Sourced
via NVD·06:18 PM
RemedyDescriptionSeverityWeaknessAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2026-58277?
CVE-2026-58277 has a high severity score of 8.8.
2
How do I fix CVE-2026-58277?
To fix CVE-2026-58277, apply the available patch from Microsoft.
3
What systems are affected by CVE-2026-58277?
CVE-2026-58277 affects Microsoft SharePoint Server and Microsoft SharePoint Enterprise Server 2016 and 2019.
4
What exploit does CVE-2026-58277 address?
CVE-2026-58277 addresses an improper authorization issue that allows privilege escalation.
5
What can an attacker do with CVE-2026-58277?
An attacker with access can exploit CVE-2026-58277 to elevate their privileges over a network.