CVE-2026-56157: Microsoft SharePoint Server Spoofing Vulnerability
Published Jul 14, 2026
·Updated
Improper access control in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Other sources
Microsoft SharePoint Server Spoofing Vulnerability
— Microsoft
Affected Software
6 affected componentsFixes available
Microsoft SharePoint Server Subscription Edition<16.0.19725.20434
16.0.19725.20434
Microsoft SharePoint Server 2019<16.0.10417.20175
16.0.10417.20175
Microsoft SharePoint Enterprise Server 2016<16.0.5561.1001
16.0.5561.1001
Microsoft SharePoint Server<16.0.19725.20434
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
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-2026-56157?
CVE-2026-56157 has a medium severity rating of 5.4.
2
How do I fix CVE-2026-56157?
The vulnerability CVE-2026-56157 can be fixed by applying the available patch from Microsoft.
3
What software is affected by CVE-2026-56157?
CVE-2026-56157 affects Microsoft SharePoint Server, Microsoft SharePoint Server Subscription Edition, Microsoft SharePoint Server 2019, and Microsoft SharePoint Enterprise Server 2016.
4
What type of vulnerability is CVE-2026-56157?
CVE-2026-56157 is a spoofing vulnerability due to improper access control in Microsoft SharePoint.
5
What are the potential impacts of CVE-2026-56157?
An authorized attacker could exploit CVE-2026-56157 to perform spoofing over a network.