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CVE-2025-29976: Microsoft SharePoint Server Elevation of Privilege Vulnerability

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-05-13 · updated 2026-06-17
• Weakness: CWE-269

Description

Improper privilege management in Microsoft Office SharePoint allows an authorized attacker to elevate privileges locally.

Affected products

• Microsoft SharePoint Server: before 16.0.18526.20286; 2016, 2019 — fixed in 16.0.18526.20286
• Microsoft SharePoint Server Subscription Edition: from 16.0.0 before 16.0.18526.20286 — fixed in 16.0.18526.20286
• Microsoft Sharepoint Enterprise Server 2016: from 16.0.0 before 16.0.5500.1001 — fixed in 16.0.5500.1001
• Microsoft SharePoint Server: from 16.0.0 before 16.0.10417.20010 — fixed in 16.0.10417.20010

How to fix

Upgrade to a fixed version: Microsoft SharePoint Server 16.0.18526.20286; Microsoft SharePoint Server Subscription Edition 16.0.18526.20286; Microsoft Sharepoint Enterprise Server 2016 16.0.5500.1001; Microsoft SharePoint Server 16.0.10417.20010. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29976

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