CVE-2025-29976

Local privilege escalation through undisclosed mechanism

Published May 13, 2025 · Updated Feb 13, 2026

Improper privilege management in Microsoft SharePoint Server allows local users with low privileges to elevate their privileges. Microsoft has not published the affected component or the privilege-management operation that mishandles the caller’s authority. Exploitation requires existing low-privilege local access; the resulting privilege level and precise post-exploitation capabilities remain undisclosed.

CVSS severity7.8
High
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper privilege management in Microsoft SharePoint Server allows local users with low privileges to elevate their privileges. Microsoft has not published the affected component or the privilege-management operation that mishandles the caller’s authority. Exploitation requires existing low-privilege local access; the resulting privilege level and precise post-exploitation capabilities remain undisclosed.

The record

CVE
CVE-2025-29976
Published
May 13, 2025
Updated
Feb 13, 2026
Vendor
Microsoft
Product
Microsoft SharePoint Enterprise Server 2016
Classifications
CWE-269, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 13, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=16.0.0 <16.0.5500.1001

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Microsoft SharePoint Enterprise Server 2016version=16.0.0 <16.0.5500.1001
Microsoft · Microsoft SharePoint Server 2019version=16.0.0 <16.0.10417.20010
Microsoft · Microsoft SharePoint Server Subscription Editionversion=16.0.0 <16.0.18526.20286

Published CVSS scores

7.8Microsoft CorporationCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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