CVE-2026-26114: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft SharePoint Enterprise Server 2016
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
AI Analysis
Technical Summary
This vulnerability (CWE-502) in Microsoft SharePoint Enterprise Server 2016 (version 16.0.0) arises from improper handling of untrusted serialized data, enabling an authorized attacker to perform remote code execution. The CVSS 3.1 base score is 8.8, reflecting high impact on confidentiality, integrity, and availability. The vulnerability requires low attack complexity and privileges but no user interaction. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation allows an authorized attacker to execute arbitrary code remotely on the affected SharePoint server, potentially leading to full compromise of the system, including confidentiality, integrity, and availability impacts.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26114 to remediate this vulnerability.
CVE-2026-26114: CWE-502: Deserialization of Untrusted Data in Microsoft Microsoft SharePoint Enterprise Server 2016
Description
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
CVSS v3.1
Score 8.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-502) in Microsoft SharePoint Enterprise Server 2016 (version 16.0.0) arises from improper handling of untrusted serialized data, enabling an authorized attacker to perform remote code execution. The CVSS 3.1 base score is 8.8, reflecting high impact on confidentiality, integrity, and availability. The vulnerability requires low attack complexity and privileges but no user interaction. Microsoft has published an official fix to remediate this issue.
Potential Impact
Successful exploitation allows an authorized attacker to execute arbitrary code remotely on the affected SharePoint server, potentially leading to full compromise of the system, including confidentiality, integrity, and availability impacts.
Mitigation Recommendations
An official fix is available from Microsoft. Administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26114 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-02-11T15:52:13.910Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26114","vendor":"Microsoft"}]
Threat ID: 69b05631ea502d3aa87d6b23
Added to database: 03/10/2026, 17:34:41 UTC
Last enriched: 06/19/2026, 20:30:35 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 174
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