Deserialization Vulnerability in Microsoft Office SharePoint
CVE-2025-59237

8.8HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft Sharepoint Enterprise Server 2016
Microsoft Sharepoint Server 2019
Microsoft Sharepoint Server Subscription Edition
Vendor
CVE Published:
14 October 2025

What is CVE-2025-59237?

A deserialization vulnerability exists in Microsoft Office SharePoint, which allows an attacker with proper authorization to execute arbitrary code over a network. This security flaw enables unauthorized actions that can compromise the integrity and security of the SharePoint environment, highlighting the importance of applying security updates to mitigate potential threats. For more detailed information, consult the vendor advisory.

Affected Version(s)

Microsoft SharePoint Enterprise Server 2016 x64-based Systems 16.0.0 < 16.0.5522.1000

Microsoft SharePoint Server 2019 x64-based Systems 16.0.0 < 16.0.10417.20059

Microsoft SharePoint Server Subscription Edition x64-based Systems 16.0.0 < 16.0.19127.20262

References

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

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

JSON
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CVE-2025-59237 : Deserialization Vulnerability in Microsoft Office SharePoint