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CVE-2025-49712: Microsoft SharePoint Remote Code Execution Vulnerability

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 20.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-08-12 · updated 2026-06-17
• Weakness: CWE-502

Description

Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.

Affected products

• Microsoft SharePoint Server: 2016, 2019
• Microsoft Sharepoint Enterprise Server 2016: from 16.0.0 before 16.0.5513.1002 — fixed in 16.0.5513.1002
• Microsoft SharePoint Server: from 16.0.0 before 16.0.10417.20041 — fixed in 16.0.10417.20041

How to fix

Upgrade to a fixed version: Microsoft Sharepoint Enterprise Server 2016 16.0.5513.1002; Microsoft SharePoint Server 16.0.10417.20041. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49712

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