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CVE-2026-50522— Microsoft SharePoint Remote Code Execution Vulnerability

CVSS 9.8 · Critical KEV EPSS 76.98% · P100

Affected Version Matrix 3

VendorProductVersion RangeStatus
MicrosoftMicrosoft SharePoint Enterprise Server 201616.0.0< 16.0.5561.1001affected
MicrosoftMicrosoft SharePoint Server 201916.0.0< 16.0.10417.20175affected
MicrosoftMicrosoft SharePoint Server Subscription Edition16.0.0< 16.0.19725.20434affected
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I. Basic Information for CVE-2026-50522

Vulnerability Information
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Vulnerability Title
Microsoft SharePoint Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Deserialization of untrusted data in Microsoft Office SharePoint allows an unauthorized attacker to execute code over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/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 Office Sharepoint Server 反序列化注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Office Sharepoint Server是美国Microsoft公司的一款为企业客户而设计的、基于web的内容管理和协作工具。该软件初始版本以Office组件形式存在,现在也仍然大大依托于Office,以提供企业门户、文档协同等功能为主,之后版本支持将Office、Exchange、Lync、Project和Visio结合起来。 Microsoft Office Sharepoint Server 2016 16.0.0版本至16.0.5561.1001之前版本、Microso
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

VendorProductAffected VersionsCPESubscribe
MicrosoftMicrosoft SharePoint Enterprise Server 2016 16.0.0 ~ 16.0.5561.1001 -
MicrosoftMicrosoft SharePoint Server 2019 16.0.0 ~ 16.0.10417.20175 -
MicrosoftMicrosoft SharePoint Server Subscription Edition 16.0.0 ~ 16.0.19725.20434 -

II. Public POCs for CVE-2026-50522

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III. Intelligence Information for CVE-2026-50522

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Vendor Advisories for CVE-2026-50522 (1)

Same Patch Batch · Microsoft · 2026-07-14 · 570 CVEs total

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CVE-2026-504479.8 CRITICALWindows Message Queuing Service (MSMQ) Remote Code Execution Vulnerability
CVE-2026-429909.8 CRITICALSQL Server ODBC driver Elevation of Privilege Vulnerability
CVE-2026-559449.8 CRITICALMicrosoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Co
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CVE-2026-561909.8 CRITICALRemote Desktop Protocol Remote Code Execution Vulnerability
CVE-2026-561889.8 CRITICALWindows Server Network driver Remote Code Execution Vulnerability
CVE-2026-586449.8 CRITICALMicrosoft SharePoint Remote Code Execution Vulnerability
CVE-2026-549909.8 CRITICALRemote Desktop Client Remote Code Execution Vulnerability
CVE-2026-491729.8 CRITICALWindows FTP Service Remote Code Execution Vulnerability
CVE-2026-485619.6 CRITICALMicrosoft Edge Copilot Remote Code Execution Vulnerability
CVE-2026-503809.6 CRITICALWindows GDI+ Remote Code Execution Vulnerability
CVE-2026-550089.6 CRITICALMicrosoft Exchange Server Spoofing Vulnerability
CVE-2026-497989.3 CRITICALWindows Kernel Elevation of Privilege Vulnerability
CVE-2026-550409.1 CRITICALMicrosoft SharePoint Server Security Feature Bypass Vulnerability
CVE-2026-566478.8 HIGHWindows Remote Access Service Infrastructure Elevation of Privilege Vulnerability
CVE-2026-504448.8 HIGHWindows Server Update Service (WSUS) Elevation of Privilege Vulnerability
CVE-2026-506878.8 HIGHWindows Win32k Elevation of Privilege Vulnerability

Showing top 20 of 570 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-2026-50522

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