CVE-2026-20951: CWE-20: Improper Input Validation in Microsoft Microsoft SharePoint Enterprise Server 2016
Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-20951) in Microsoft SharePoint Enterprise Server 2016 arises from improper input validation (CWE-20). It enables an attacker without privileges to execute code locally, potentially compromising the system's confidentiality, integrity, and availability. The CVSS 3.1 vector indicates low attack complexity, no privileges required, but user interaction is needed. The vulnerability is officially patched by Microsoft.
Potential Impact
Successful exploitation allows unauthorized local code execution, leading to full compromise of the affected SharePoint server, impacting confidentiality, integrity, and availability of data and services hosted on it.
Mitigation Recommendations
An official patch is available for Microsoft SharePoint Enterprise Server 2016 to remediate this vulnerability. Administrators should apply the provided security update promptly to mitigate the risk. No additional vendor advisories indicate alternative mitigations or that no action is required.
CVE-2026-20951: CWE-20: Improper Input Validation in Microsoft Microsoft SharePoint Enterprise Server 2016
Description
Improper input validation in Microsoft Office SharePoint allows an unauthorized attacker to execute code locally.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-20951) in Microsoft SharePoint Enterprise Server 2016 arises from improper input validation (CWE-20). It enables an attacker without privileges to execute code locally, potentially compromising the system's confidentiality, integrity, and availability. The CVSS 3.1 vector indicates low attack complexity, no privileges required, but user interaction is needed. The vulnerability is officially patched by Microsoft.
Potential Impact
Successful exploitation allows unauthorized local code execution, leading to full compromise of the affected SharePoint server, impacting confidentiality, integrity, and availability of data and services hosted on it.
Mitigation Recommendations
An official patch is available for Microsoft SharePoint Enterprise Server 2016 to remediate this vulnerability. Administrators should apply the provided security update promptly to mitigate the risk. No additional vendor advisories indicate alternative mitigations or that no action is required.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-04T20:04:16.339Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69668ae5a60475309f9ae23b
Added to database: 1/13/2026, 6:11:49 PM
Last enriched: 4/3/2026, 12:52:10 PM
Last updated: 5/10/2026, 9:18:50 AM
Views: 93
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