CVE-2026-20963
Analyzed
Analyzed - Analysis Complete
BaseFortify
Publication date: 2026-01-13
Last updated on: 2026-04-01
Assigner: Microsoft Corporation
Description
Description
Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | sharepoint_server | to 16.0.19127.20442 (exc) |
| microsoft | sharepoint_server | 2016 |
| microsoft | sharepoint_server | 2019 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-502 | The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability involves the deserialization of untrusted data in Microsoft Office SharePoint, which allows an authorized attacker to execute code remotely over a network. [1]
How can this vulnerability impact me? :
An attacker with authorized access can exploit this vulnerability to execute arbitrary code remotely, potentially leading to full compromise of the affected system, including confidentiality, integrity, and availability impacts. [1]
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