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) and is classified under CWE-502: Deserialization of Untrusted Data. It enables an attacker with authorized access to execute code remotely by exploiting unsafe deserialization processes in SharePoint. The CVSS 3.1 vector indicates network attack vector, low attack complexity, required privileges, no user interaction, and high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
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's confidentiality, integrity, and availability. This could result in unauthorized data access, modification, or denial of service.
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. No additional mitigation steps are indicated beyond applying the official patch.
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-33112) affects Microsoft SharePoint Enterprise Server 2016 (version 16.0.0) and is classified under CWE-502: Deserialization of Untrusted Data. It enables an attacker with authorized access to execute code remotely by exploiting unsafe deserialization processes in SharePoint. The CVSS 3.1 vector indicates network attack vector, low attack complexity, required privileges, no user interaction, and high impact on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability.
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's confidentiality, integrity, and availability. This could result in unauthorized data access, modification, or denial of service.
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. No additional mitigation steps are indicated beyond applying the official patch.
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: 5/12/2026, 5:36:57 PM
Last enriched: 5/12/2026, 7:36:55 PM
Last updated: 5/13/2026, 4:47:18 AM
Views: 2
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