Remote Code Execution Vulnerability in Microsoft Office SharePoint
CVE-2026-26114

8.8HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Sharepoint Enterprise Server 2016
Microsoft Sharepoint Server 2019
Vendor
CVE Published:
10 March 2026

What is CVE-2026-26114?

In Microsoft Office SharePoint, a vulnerability exists that enables an authorized attacker to manipulate untrusted data, leading to potential remote code execution. This flaw allows the attacker to send serialized data that can be improperly processed by the SharePoint server. If successfully exploited, this could compromise the confidentiality and integrity of the SharePoint environment, enabling the execution of arbitrary code over the network. Organizations must ensure they are aware of this issue and apply necessary updates to mitigate associated risks.

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Affected Version(s)

Microsoft SharePoint Enterprise Server 2016 x64-based Systems 16.0.0 < 16.0.5543.1000

Microsoft SharePoint Server 2019 x64-based Systems 16.0.0 < 16.0.10417.20102

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisorypatch

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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