CVE-2026-33112: 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 (CVE-2026-33112) affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0. It involves CWE-502, deserialization of untrusted data, which can lead to remote code execution by an attacker with authorized access. The CVSS v3.1 base score is 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability as detailed in their security advisory.
Potential Impact
Successful exploitation allows an authorized attacker to execute arbitrary code remotely on the affected SharePoint server. This compromises confidentiality, integrity, and availability of the system. The vulnerability requires low attack complexity and no user interaction, increasing the risk in environments where authorized access is possible.
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-2026-33112 to remediate this vulnerability.
CVE-2026-33112: 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 (CVE-2026-33112) affects Microsoft SharePoint Enterprise Server 2016 version 16.0.0. It involves CWE-502, deserialization of untrusted data, which can lead to remote code execution by an attacker with authorized access. The CVSS v3.1 base score is 8.8, indicating high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability as detailed in their security advisory.
Potential Impact
Successful exploitation allows an authorized attacker to execute arbitrary code remotely on the affected SharePoint server. This compromises confidentiality, integrity, and availability of the system. The vulnerability requires low attack complexity and no user interaction, increasing the risk in environments where authorized access is possible.
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-2026-33112 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-03-17T20:15:23.720Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33112","vendor":"Microsoft"}]
Threat ID: 6a036539cbff5d861008c328
Added to database: 05/12/2026, 17:36:57 UTC
Last enriched: 06/19/2026, 17:30:29 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 66
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