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CVE-2023-38177: Microsoft SharePoint Server Remote Code Execution Vulnerability

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-11-14 · updated 2026-06-17
• Weakness: CWE-502

Description

Microsoft SharePoint Server Remote Code Execution Vulnerability

Affected products

• Microsoft SharePoint Server: 2016
• Microsoft SharePoint Server: 2019
• Microsoft SharePoint Server Subscription Edition: from 16.0.0 before 16.0.16731.20350 — fixed in 16.0.16731.20350
• Microsoft Sharepoint Enterprise Server 2016: from 16.0.0 before 16.0.5422.1000 — fixed in 16.0.5422.1000
• Microsoft SharePoint Server: from 16.0.0 before 16.0.10404.20003 — fixed in 16.0.10404.20003

How to fix

Upgrade to a fixed version: Microsoft SharePoint Server Subscription Edition 16.0.16731.20350; Microsoft Sharepoint Enterprise Server 2016 16.0.5422.1000; Microsoft SharePoint Server 16.0.10404.20003. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-38177
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-38177

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