CVE-2026-56164— Microsoft SharePoint Server Elevation of Privilege Vulnerability
In-the-Wild Activity Observed github_trending · low cisa_kev · confirmed
Possible ATT&CK Techniques 1AI
T1078 · Valid AccountsAffected Version Matrix 3
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 | 16.0.0< 16.0.5561.1001 | affected |
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0< 16.0.10417.20175 | affected |
| Microsoft | Microsoft SharePoint Server Subscription Edition | 16.0.0< 16.0.19725.20434 | affected |
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I. Basic Information for CVE-2026-56164
Vulnerability Information
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Vulnerability Title
Microsoft SharePoint Server Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Missing authentication for critical function in Microsoft Office SharePoint allows an unauthorized attacker to elevate privileges 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:N/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Office Sharepoint Server 授权问题漏洞
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存在授权问题漏洞，该漏洞源于缺少关键功能身份验证，可能允许未经授权的攻击者通过网络
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 ~ 16.0.5561.1001 | - | |
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0 ~ 16.0.10417.20175 | - | |
| Microsoft | Microsoft SharePoint Server Subscription Edition | 16.0.0 ~ 16.0.19725.20434 | - |
II. Public POCs for CVE-2026-56164
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-56164 (1)
Same Patch Batch · Microsoft · 2026-07-14 · 570 CVEs total
| CVE-2026-57092 | 9.9 CRITICAL | Microsoft Windows VMSwitch Elevation of Privilege Vulnerability |
| CVE-2026-58644 | 9.8 CRITICAL | Microsoft SharePoint Remote Code Execution Vulnerability |
| CVE-2026-56188 | 9.8 CRITICAL | Windows Server Network driver Remote Code Execution Vulnerability |
| CVE-2026-42990 | 9.8 CRITICAL | SQL Server ODBC driver Elevation of Privilege Vulnerability |
| CVE-2026-55010 | 9.8 CRITICAL | Minecraft Bedrock Dedicated Server Remote Code Execution Vulnerability |
| CVE-2026-56190 | 9.8 CRITICAL | Remote Desktop Protocol Remote Code Execution Vulnerability |
| CVE-2026-50518 | 9.8 CRITICAL | Windows DHCP Server Remote Code Execution Vulnerability |
| CVE-2026-54990 | 9.8 CRITICAL | Remote Desktop Client Remote Code Execution Vulnerability |
| CVE-2026-50447 | 9.8 CRITICAL | Windows Message Queuing Service (MSMQ) Remote Code Execution Vulnerability |
| CVE-2026-49172 | 9.8 CRITICAL | Windows FTP Service Remote Code Execution Vulnerability |
| CVE-2026-50522 | 9.8 CRITICAL | Microsoft SharePoint Remote Code Execution Vulnerability |
| CVE-2026-55944 | 9.8 CRITICAL | Microsoft Dynamics NAV and Microsoft Dynamics 365 Business Central (On Premises) Remote Co |
| CVE-2026-56159 | 9.8 CRITICAL | DHCP Server Service Remote Code Execution Vulnerability |
| CVE-2026-48561 | 9.6 CRITICAL | Microsoft Edge Copilot Remote Code Execution Vulnerability |
| CVE-2026-50380 | 9.6 CRITICAL | Windows GDI+ Remote Code Execution Vulnerability |
| CVE-2026-55008 | 9.6 CRITICAL | Microsoft Exchange Server Spoofing Vulnerability |
| CVE-2026-49798 | 9.3 CRITICAL | Windows Kernel Elevation of Privilege Vulnerability |
| CVE-2026-55040 | 9.1 CRITICAL | Microsoft SharePoint Server Security Feature Bypass Vulnerability |
| CVE-2026-50444 | 8.8 HIGH | Windows Server Update Service (WSUS) Elevation of Privilege Vulnerability |
| CVE-2026-50474 | 8.8 HIGH | Remote Desktop Client Remote Code Execution Vulnerability |
Showing top 20 of 570 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Microsoft SharePoint Enterprise Server 2016
- CVE-2026-62826
Microsoft SharePoint Server Spoofing Vulnerability - CVE-2026-58277
Microsoft SharePoint Elevation of Privilege Vulnerability - CVE-2026-56157
Microsoft SharePoint Server Spoofing Vulnerability - CVE-2026-55135
Microsoft SharePoint Server Spoofing Vulnerability - CVE-2026-55052
Microsoft SharePoint Elevation of Privilege Vulnerability
Same vendor: Microsoft
- CVE-2026-70332
Microsoft Office SharePoint Spoofing Vulnerability - CVE-2026-62873
Microsoft 365 Admin Center Elevation of Privilege Vulnerabil - CVE-2026-63508
Microsoft Planetary Computer Pro Elevation of Privilege Vuln - CVE-2026-50515
Azure Service Bus Remote Code Execution Vulnerability - CVE-2026-65667
Microsoft Teams Elevation of Privilege Vulnerability
Same weakness: CWE-306
- CVE-2026-61808
LightRAG: Missing Authentication for Critical API Functions - CVE-2025-71409
No Authentication for Very High Frequency Data Link messages - CVE-2026-63508
Microsoft Planetary Computer Pro Elevation of Privilege Vuln - CVE-2026-70559
Dinky Unauthenticated System Configuration and Credential Di - CVE-2026-53984
Ground Station prior to 0.6.0 Unauthenticated Database Wipe
V. Comments for CVE-2026-56164
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