CVE-2026-47641: CWE-20: Improper Input Validation in Microsoft Microsoft SharePoint Enterprise Server 2016
Improper input validation in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-47641) in Microsoft SharePoint Enterprise Server 2016 arises from improper input validation (CWE-20). It enables an attacker with authorized access to conduct spoofing attacks over a network. The CVSS 3.1 base score is 4.6, reflecting a medium severity with low impact on confidentiality and integrity and no impact on availability. The vulnerability requires low attack complexity and privileges, and user interaction is required. Microsoft has published an official fix for this issue.
Potential Impact
An authorized attacker can exploit this vulnerability to perform spoofing over a network, potentially misleading users or systems by masquerading as a trusted entity. The impact on confidentiality and integrity is low, with no availability impact. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users of Microsoft SharePoint Enterprise Server 2016 version 16.0.0 should apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47641 to remediate this vulnerability.
CVE-2026-47641: CWE-20: Improper Input Validation in Microsoft Microsoft SharePoint Enterprise Server 2016
Description
Improper input validation in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
CVSS v3.1
Score 4.6medium
Affected software
Microsoft
Microsoft SharePoint Enterprise Server 2016
Microsoft
Microsoft SharePoint Server 2019
Microsoft
Microsoft SharePoint Server Subscription Edition
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-47641) in Microsoft SharePoint Enterprise Server 2016 arises from improper input validation (CWE-20). It enables an attacker with authorized access to conduct spoofing attacks over a network. The CVSS 3.1 base score is 4.6, reflecting a medium severity with low impact on confidentiality and integrity and no impact on availability. The vulnerability requires low attack complexity and privileges, and user interaction is required. Microsoft has published an official fix for this issue.
Potential Impact
An authorized attacker can exploit this vulnerability to perform spoofing over a network, potentially misleading users or systems by masquerading as a trusted entity. The impact on confidentiality and integrity is low, with no availability impact. There are no known exploits in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users of Microsoft SharePoint Enterprise Server 2016 version 16.0.0 should apply the vendor-provided patch as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47641 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-05-19T20:12:27.070Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-47641","vendor":"Microsoft"}]
Threat ID: 6a284cf08dd33fbd85665067
Added to database: 06/09/2026, 17:27:12 UTC
Last enriched: 08/14/2026, 13:49:03 UTC
Last updated: 09/13/2026, 22:01:34 UTC
Views: 77
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