CVE-2025-29794
Published: 08 April 2025
Summary
CVE-2025-29794 is a high-severity Improper Authorization (CWE-285) vulnerability in Microsoft Sharepoint Server. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 27.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
CVE-2025-29794 is an improper authorization vulnerability, tracked under CWE-285, that affects Microsoft Office SharePoint. The flaw carries a CVSS 3.1 base score of 8.8 and permits an attacker to execute arbitrary code over a network.
An authorized attacker with low privileges can exploit the issue remotely without user interaction. Successful exploitation grants full control over confidentiality, integrity, and availability on the affected SharePoint deployment.
Microsoft has published an advisory at the MSRC update guide that addresses the vulnerability and supplies remediation guidance.
EPSS for the CVE rose from a low baseline to a peak of 0.0176 on 2026-05-13 before receding to the current value of 0.0072, indicating a modest but detectable increase in exploitation interest after disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2025-10115
Vulnerability details
Improper authorization in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Documented procedures facilitate correct implementation and ongoing management of authorization decisions.
Periodic reviews identify and correct flaws in authorization decisions or enforcement.
The control's documentation requirement reduces improper authorization by ensuring only mission-justified actions bypass authentication.
Establishing permitted attributes and values, plus auditing changes, ensures authorization decisions are based on correctly managed policy data.
Explicitly mandates authorizing remote access types before permitting connections, directly mitigating improper authorization.
The control explicitly requires authorization of each wireless access type prior to permitting connections.
Mandating explicit authorization of mobile device connections reduces the risk of improper authorization decisions for system access.
Specifying access authorizations for each account and requiring approvals for account requests enforces proper authorization decisions.