CVE-2021-31205— Windows SMB Client Security Feature Bypass Vulnerability
Quick assessment
Affected
Microsoft Windows 10 Version 2004
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 Windows SMB Client是美国微软（Microsoft）公司的一个应用软件。一个SMB客户端。 Microsoft Windows SMB Client 存在安全特征问题漏洞。以下产品和版本受到影响：Windows 10 Version 2004 for 32-bit Systems,Windows 10 Version 2004 for ARM64-based Systems,Windows 10 Version 2004 for x64-based Systems,Wi
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-31205
Vulnerability Information
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Vulnerability Title
Windows SMB Client Security Feature Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Windows SMB Client Security Feature Bypass Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows SMB Client 安全特征问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows SMB Client是美国微软（Microsoft）公司的一个应用软件。一个SMB客户端。 Microsoft Windows SMB Client 存在安全特征问题漏洞。以下产品和版本受到影响：Windows 10 Version 2004 for 32-bit Systems,Windows 10 Version 2004 for ARM64-based Systems,Windows 10 Version 2004 for x64-based Systems,Wi
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 | Windows 10 Version 2004 | 10.0.0 ~ 10.0.19041.982 |
cpe:2.3:o:microsoft:windows_10_1809:10.0.19041.982:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows Server version 2004 | 10.0.0 ~ 10.0.19041.982 |
cpe:2.3:o:microsoft:windows_server_2004:10.0.19041.982:*:*:*:*:*:*:*
|
|
| Microsoft | Windows 10 Version 20H2 | 10.0.0 ~ 10.0.19042.982 |
cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.982:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows Server version 20H2 | 10.0.0 ~ 10.0.19042.982 |
cpe:2.3:o:microsoft:windows_server_20H2:10.0.19042.982:*:*:*:*:*:*:*
|
|
II. Public POCs for CVE-2021-31205
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-31205 (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-2021-31181 | 8.8 HIGH | Microsoft SharePoint Remote Code Execution Vulnerability |
| CVE-2021-28474 | 8.8 HIGH | Microsoft SharePoint Server Remote Code Execution Vulnerability |
| CVE-2021-31194 | 8.8 HIGH | OLE Automation Remote Code Execution Vulnerability |
| CVE-2021-31198 | 7.8 HIGH | Microsoft Exchange Server Remote Code Execution Vulnerability |
| CVE-2021-31188 | 7.8 HIGH | Windows Graphics Component Elevation of Privilege Vulnerability |
| CVE-2021-31211 | 7.8 HIGH | Visual Studio Code Remote Code Execution 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-2021-31180 | 7.8 HIGH | Microsoft Office Graphics Remote Code Execution Vulnerability |
| CVE-2021-31168 | 7.8 HIGH | Windows Container Manager Service 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 |
| CVE-2021-31170 | 7.8 HIGH | Windows Graphics Component Elevation of Privilege Vulnerability |
| CVE-2021-31169 | 7.8 HIGH | Windows Container Manager Service Elevation of Privilege Vulnerability |
Showing top 20 of 52 CVEs. View all on vendor page → →
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V. Comments for CVE-2021-31205
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