CVE-2026-20951
Unknown
Unknown - Not Provided
Improper Input Validation in SharePoint Enables Local Code Execution
Publication date: 2026-01-13
Last updated on: 2026-01-13
Assigner: Microsoft Corporation
Description
Description
Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code locally.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | office_sharepoint | * |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-20 | The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is caused by improper input validation in Microsoft Office SharePoint, which allows an unauthorized attacker to execute code locally on the affected system. [1]
How can this vulnerability impact me? :
An attacker exploiting this vulnerability can execute code locally without proper authorization, potentially leading to full compromise of the affected system, including high impact on confidentiality, integrity, and availability. [1]
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