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CVE-2026-33110— Microsoft SharePoint Server Remote Code Execution Vulnerability

Quick assessment

Affected
Microsoft Microsoft SharePoint Enterprise Server 2016
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft SharePoint是美国微软（Microsoft）公司的一套企业业务协作平台。该平台用于对业务信息进行整合，并能够共享工作、与他人协同工作、组织项目和工作组、搜索人员和信息。 Microsoft SharePoint存在代码问题漏洞。攻击者利用该漏洞可以远程执行代码。以下产品和版本受到影响：Microsoft SharePoint Enterprise Server 2016,Microsoft SharePoint Server 2019,Microsoft SharePoint

CVSS 8.8 · High EPSS 2.29% · P83

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 3

VendorProduct Version RangeStatus
Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.0< 16.0.5552.1002 affected
Microsoft Microsoft SharePoint Server 2019 16.0.0< 16.0.10417.20128 affected
Microsoft Microsoft SharePoint Server Subscription Edition 16.0.0< 16.0.19725.20280 affected
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I. Basic Information for CVE-2026-33110

Vulnerability Information
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Vulnerability Title
Microsoft SharePoint Server Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft SharePoint 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft SharePoint是美国微软（Microsoft）公司的一套企业业务协作平台。该平台用于对业务信息进行整合，并能够共享工作、与他人协同工作、组织项目和工作组、搜索人员和信息。 Microsoft SharePoint存在代码问题漏洞。攻击者利用该漏洞可以远程执行代码。以下产品和版本受到影响：Microsoft SharePoint Enterprise Server 2016,Microsoft SharePoint Server 2019,Microsoft SharePoint
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.0 ~ 16.0.5552.1002 -
Microsoft Microsoft SharePoint Server 2019 16.0.0 ~ 16.0.10417.20128 -
Microsoft Microsoft SharePoint Server Subscription Edition 16.0.0 ~ 16.0.19725.20280 -

II. Public POCs for CVE-2026-33110

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III. Intelligence Information for CVE-2026-33110

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Vendor Advisories for CVE-2026-33110 (1)

Same Patch Batch · Microsoft · 2026-05-12 · 125 CVEs total

CVE-2026-42898 9.9 CRITICAL Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability
CVE-2026-42823 9.9 CRITICAL Azure Logic Apps Elevation of Privilege Vulnerability
CVE-2026-41089 9.8 CRITICAL Windows Netlogon Remote Code Execution Vulnerability
CVE-2026-41096 9.8 CRITICAL Windows DNS Client Remote Code Execution Vulnerability
CVE-2026-40379 9.3 CRITICAL Azure Entra ID Spoofing Vulnerability
CVE-2026-40402 9.3 CRITICAL Windows Hyper-V Elevation of Privilege Vulnerability
CVE-2026-42833 9.1 CRITICAL Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability
CVE-2026-33117 9.1 CRITICAL Azure SDK for Java Security Feature Bypass Vulnerability
CVE-2026-41103 9.1 CRITICAL Microsoft SSO Plugin for Jira & Confluence Elevation of Privilege Vulnerability
CVE-2026-40357 8.8 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2026-40365 8.8 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2026-40370 8.8 HIGH SQL Server Remote Code Execution Vulnerability
CVE-2026-41094 8.8 HIGH Microsoft Data Formulator Remote Code Execution Vulnerability
CVE-2026-35439 8.8 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2026-40403 8.8 HIGH Windows Graphics Component Remote Code Execution Vulnerability
CVE-2026-41109 8.8 HIGH GitHub Copilot and Visual Studio Code Security Feature Bypass Vulnerability
CVE-2026-35436 8.8 HIGH Microsoft Office Click-To-Run Elevation of Privilege Vulnerability
CVE-2026-40420 8.8 HIGH Microsoft Office Click-To-Run Elevation of Privilege Vulnerability
CVE-2026-41086 8.8 HIGH Windows Admin Center in Azure Portal Elevation of Privilege Vulnerability
CVE-2026-34329 8.8 HIGH Microsoft Message Queuing (MSMQ) Remote Code Execution Vulnerability

Showing top 20 of 125 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Microsoft SharePoint Enterprise Server 2016
Same vendor: Microsoft
Same weakness: CWE-502

V. Comments for CVE-2026-33110

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