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CVE-2021-31979— Windows Kernel Elevation of Privilege Vulnerability

Quick assessment

Affected
Microsoft Windows 10 Version 1507
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Windows Kernel是美国微软（Microsoft）公司的Windows操作系统的内核。 Microsoft Windows Kernel 存在缓冲区错误漏洞。以下产品和版本受到影响：Windows 8.1 for x64-based systems,Windows RT 8.1,Windows Server 2008 for 32-bit Systems Service Pack 2,Windows Server 2008 for 32-bit Systems Service

CVSS 7.8 · High KEV EPSS 4.54% · P91

Affected Version Matrix 25

VendorProduct Version RangeStatus
Microsoft Windows 10 Version 1507 10.0.10240.0< 10.0.10240.19003 affected
Microsoft Windows 10 Version 1607 10.0.14393.0< 10.0.14393.4530 affected
Microsoft Windows 10 Version 1809 10.0.17763.0< 10.0.17763.2061 affected
10.0.0< 10.0.17763.2061 affected
Microsoft Windows 10 Version 1909 10.0.0< 10.0.18363.1679 affected
Microsoft Windows 10 Version 2004 10.0.0< 10.0.19041.1110 affected
Microsoft Windows 10 Version 20H2 10.0.0< 10.0.19042.1110 affected
Microsoft Windows 10 Version 21H1 10.0.0< 10.0.19043.1110 affected
Microsoft Windows 7 6.1.0< 6.1.7601.25661 affected
Microsoft Windows 7 Service Pack 1 6.1.0< 6.1.7601.25661 affected
Microsoft Windows 8.1 6.3.0< 6.3.9600.20069 affected
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0< 6.1.7601.25661 affected
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0< 6.1.7601.25661 affected
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0< 6.0.6003.21167 affected
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0< 6.0.6003.21167 affected
Microsoft Windows Server 2012 6.2.9200.0< 6.2.9200.23409 affected
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0< 6.2.9200.23409 affected
Microsoft Windows Server 2012 R2 6.3.9600.0< 6.3.9600.20069 affected
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0< 6.3.9600.20069 affected
Microsoft Windows Server 2016 10.0.14393.0< 10.0.14393.4530 affected
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0< 10.0.14393.4530 affected
Microsoft Windows Server 2019 10.0.17763.0< 10.0.17763.2061 affected
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0< 10.0.17763.2061 affected
Microsoft Windows Server version 2004 10.0.0< 10.0.19041.1110 affected
Microsoft Windows Server version 20H2 10.0.0< 10.0.19042.1110 affected
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I. Basic Information for CVE-2021-31979

Vulnerability Information
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Vulnerability Title
Windows Kernel Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Windows Kernel Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows Kernel 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows Kernel是美国微软（Microsoft）公司的Windows操作系统的内核。 Microsoft Windows Kernel 存在缓冲区错误漏洞。以下产品和版本受到影响：Windows 8.1 for x64-based systems,Windows RT 8.1,Windows Server 2008 for 32-bit Systems Service Pack 2,Windows Server 2008 for 32-bit Systems Service
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Windows 10 Version 1507 10.0.10240.0 ~ 10.0.10240.19003 -
Microsoft Windows 10 Version 1607 10.0.14393.0 ~ 10.0.14393.4530 -
Microsoft Windows 10 Version 1809 10.0.17763.0 ~ 10.0.17763.2061 -
Microsoft Windows 10 Version 1809 10.0.0 ~ 10.0.17763.2061 -
Microsoft Windows 10 Version 1909 10.0.0 ~ 10.0.18363.1679 -
Microsoft Windows 10 Version 2004 10.0.0 ~ 10.0.19041.1110 -
Microsoft Windows 10 Version 20H2 10.0.0 ~ 10.0.19042.1110 -
Microsoft Windows 10 Version 21H1 10.0.0 ~ 10.0.19043.1110 -
Microsoft Windows 7 6.1.0 ~ 6.1.7601.25661 -
Microsoft Windows 7 Service Pack 1 6.1.0 ~ 6.1.7601.25661 -
Microsoft Windows 8.1 6.3.0 ~ 6.3.9600.20069 -
Microsoft Windows Server 2008 R2 Service Pack 1 6.1.7601.0 ~ 6.1.7601.25661 -
Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core installation) 6.1.7601.0 ~ 6.1.7601.25661 -
Microsoft Windows Server 2008 Service Pack 2 6.0.6003.0 ~ 6.0.6003.21167 -
Microsoft Windows Server 2008 Service Pack 2 (Server Core installation) 6.0.6003.0 ~ 6.0.6003.21167 -
Microsoft Windows Server 2012 6.2.9200.0 ~ 6.2.9200.23409 -
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 ~ 6.2.9200.23409 -
Microsoft Windows Server 2012 R2 6.3.9600.0 ~ 6.3.9600.20069 -
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 ~ 6.3.9600.20069 -
Microsoft Windows Server 2016 10.0.14393.0 ~ 10.0.14393.4530 -
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 ~ 10.0.14393.4530 -
Microsoft Windows Server 2019 10.0.17763.0 ~ 10.0.17763.2061 -
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 ~ 10.0.17763.2061 -
Microsoft Windows Server version 2004 10.0.0 ~ 10.0.19041.1110 -
Microsoft Windows Server version 20H2 10.0.0 ~ 10.0.19042.1110 -

II. Public POCs for CVE-2021-31979

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III. Intelligence Information for CVE-2021-31979

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Vendor Advisories for CVE-2021-31979 (2)

Same Patch Batch · Microsoft · 2021-07-14 · 90 CVEs total

CVE-2021-34473 9.1 CRITICAL Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2021-34523 9.0 CRITICAL Microsoft Exchange Server Elevation of Privilege Vulnerability
CVE-2021-34508 8.8 HIGH Windows Kernel Remote Code Execution Vulnerability
CVE-2021-33749 8.8 HIGH Windows DNS Snap-in Remote Code Execution Vulnerability
CVE-2021-34494 8.8 HIGH Windows DNS Server Remote Code Execution Vulnerability
CVE-2021-33780 8.8 HIGH Windows DNS Server Remote Code Execution Vulnerability
CVE-2021-33750 8.8 HIGH Windows DNS Snap-in Remote Code Execution Vulnerability
CVE-2021-33756 8.8 HIGH Windows DNS Snap-in Remote Code Execution Vulnerability
CVE-2021-34525 8.8 HIGH Windows DNS Server Remote Code Execution Vulnerability
CVE-2021-33752 8.8 HIGH Windows DNS Snap-in Remote Code Execution Vulnerability
CVE-2021-34469 8.2 HIGH Microsoft Office Security Feature Bypass Vulnerability
CVE-2021-33767 8.2 HIGH Open Enclave SDK Elevation of Privilege Vulnerability
CVE-2021-33786 8.1 HIGH Windows LSA Security Feature Bypass Vulnerability
CVE-2021-34520 8.1 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2021-34492 8.1 HIGH Windows Certificate Spoofing Vulnerability
CVE-2021-33781 8.1 HIGH Azure AD Security Feature Bypass Vulnerability
CVE-2021-33779 8.1 HIGH Windows AD FS Security Feature Bypass Vulnerability
CVE-2021-34470 8.0 HIGH Microsoft Exchange Server Elevation of Privilege Vulnerability
CVE-2021-34474 8.0 HIGH Microsoft Dynamics 365 Business Central Remote Code Execution Vulnerability
CVE-2021-33768 8.0 HIGH Microsoft Exchange Server Elevation of Privilege Vulnerability

Showing top 20 of 90 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Windows 10 Version 1507
Same vendor: Microsoft

V. Comments for CVE-2021-31979

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