Summary
Impact: Elevation of Privilege. Microsoft rating: Important. Not known to be exploited — Exploitation More Likely. Customer action: Required.
Details
What privileges could be gained by an attacker who successfully exploited this vulnerability?
An attacker who successfully exploited the vulnerability could elevate privileges and gain the ability to read the load file.
I am running SharePoint Enterprise Server 2016 or SharePoint Server 2019 and there are multiple updates available for each of these affected versions. Do I need to install all the updates listed in the Security Updates table for these versions?
Yes. Customers should apply all updates offered for the software installed on their systems. If multiple updates apply, they can be installed in any order.
Security updates
16.0.5500.1001 — https://support.microsoft.com/help/5002722
16.0.5500.1001 — https://support.microsoft.com/help/5002712
16.0.10417.20010 — https://support.microsoft.com/help/5002708
16.0.10417.20010 — https://support.microsoft.com/help/5002706
16.0.18526.20286 — https://support.microsoft.com/help/5002709
Vulnerabilities 1
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High 7.8
Microsoft SharePoint Server Elevation of Privilege Vulnerability
Improper privilege management in Microsoft Office SharePoint allows an authorized attacker to elevate privileges locally.
Revision history
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#1
Information published.
References
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CVE-2025-29976 Microsoft SharePoint Server Elevation of Privilege Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29976
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss