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CVE-2021-26418— Microsoft SharePoint Server Spoofing 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存在安全漏洞。以下产品和版本受到影响：Microsoft SharePoint Enterprise Server 2016,Microsoft SharePoint Server 2019,Microsoft SharePoint Foundation 2013 Ser

CVSS 4.6 · Medium EPSS 1.24% · P67

Possible ATT&CK Techniques 1 AI

T1498.002 · Reflection Amplification
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I. Basic Information for CVE-2021-26418

Vulnerability Information
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Vulnerability Title
Microsoft SharePoint Server Spoofing Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Microsoft SharePoint Server Spoofing Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft SharePoint 安全漏洞
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存在安全漏洞。以下产品和版本受到影响：Microsoft SharePoint Enterprise Server 2016,Microsoft SharePoint Server 2019,Microsoft SharePoint Foundation 2013 Ser
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 ~ 16.0.5161.1000 cpe:2.3:a:microsoft:sharepoint_server:2016:*:*:*:enterprise:*:*:*
Microsoft Microsoft SharePoint Server 2019 16.0.0 ~ 16.0.10374.20000 cpe:2.3:a:microsoft:sharepoint_server:2019:*:*:*:*:*:*:*
Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1 15.0.0 ~ 15.0.5345.1000 cpe:2.3:a:microsoft:sharepoint_foundation:2013:sp1:*:*:*:*:*:*

II. Public POCs for CVE-2021-26418

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III. Intelligence Information for CVE-2021-26418

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Vendor Advisories for CVE-2021-26418 (1)

Same Patch Batch · Microsoft · 2021-05-11 · 52 CVEs total

CVE-2021-28476 9.9 CRITICAL Windows Hyper-V Remote Code Execution Vulnerability
CVE-2021-31166 9.8 CRITICAL HTTP Protocol Stack Remote Code Execution Vulnerability
CVE-2021-27068 8.8 HIGH Visual Studio Remote Code Execution Vulnerability
CVE-2021-28455 8.8 HIGH Microsoft Jet Red Database Engine and Access Connectivity Engine Remote Code Execution Vul
CVE-2021-28474 8.8 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2021-31181 8.8 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2021-31194 8.8 HIGH OLE Automation Remote Code Execution Vulnerability
CVE-2021-28465 7.8 HIGH Web Media Extensions Remote Code Execution Vulnerability
CVE-2021-31169 7.8 HIGH Windows Container Manager Service Elevation of Privilege Vulnerability
CVE-2021-31211 7.8 HIGH Visual Studio Code Remote Code Execution Vulnerability
CVE-2021-31187 7.8 HIGH Windows WalletService Elevation of Privilege Vulnerability
CVE-2021-31165 7.8 HIGH Windows Container Manager Service Elevation of Privilege Vulnerability
CVE-2021-31167 7.8 HIGH Windows Container Manager Service Elevation of Privilege Vulnerability
CVE-2021-31168 7.8 HIGH Windows Container Manager Service Elevation of Privilege Vulnerability
CVE-2021-31180 7.8 HIGH Microsoft Office Graphics Remote Code Execution Vulnerability
CVE-2021-31170 7.8 HIGH Windows Graphics Component Elevation of Privilege Vulnerability
CVE-2021-31179 7.8 HIGH Microsoft Office Remote Code Execution Vulnerability
CVE-2021-31177 7.8 HIGH Microsoft Office Remote Code Execution Vulnerability
CVE-2021-31175 7.8 HIGH Microsoft Office Remote Code Execution Vulnerability
CVE-2021-31176 7.8 HIGH Microsoft Office Remote Code Execution Vulnerability

Showing top 20 of 52 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Microsoft SharePoint Enterprise Server 2016
Same vendor: Microsoft

V. Comments for CVE-2021-26418

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