CVE-2021-33742— Windows MSHTML Platform Remote Code Execution Vulnerability
Quick assessment
Affected
Microsoft Windows 10 Version 1809
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是美国微软（Microsoft）公司的一种桌面操作系统。 Microsoft Windows MSHTML Platform存在安全漏洞。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Systems,Windows 10 Version 1809 for x64-based Systems,Windows 10 Version 1809 for ARM64-based Systems,Windows Server 2019,
In-the-Wild Activity Observed
cisa_kev · confirmed
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-33742
Vulnerability Information
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Vulnerability Title
Windows MSHTML Platform Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Windows MSHTML Platform Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/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 MSHTML Platform 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows是美国微软（Microsoft）公司的一种桌面操作系统。 Microsoft Windows MSHTML Platform存在安全漏洞。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Systems,Windows 10 Version 1809 for x64-based Systems,Windows 10 Version 1809 for ARM64-based Systems,Windows Server 2019,
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)
Shenlong Deep Dive — AI Deep Analysis
10-question deep dive: root cause, exploitation, mitigation, urgency. Read summary free, full version requires login.
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Windows 10 Version 1809 | 10.0.0 ~ 10.0.17763.1999 |
cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.1999:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows Server 2019 | 10.0.0 ~ 10.0.17763.1999 |
cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.1999:*:*:*:*:*:*:*
|
|
| Microsoft | Windows 10 Version 1909 | 10.0.0 ~ 10.0.18363.1621 |
cpe:2.3:o:microsoft:windows_10_1909:10.0.18363.1621:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows 10 Version 21H1 | 10.0.0 ~ 10.0.19043.1052 |
cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1052:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows 10 Version 2004 | 10.0.0 ~ 10.0.19041.1052 |
cpe:2.3:o:microsoft:windows_10_1809:10.0.19041.1052:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows 10 Version 20H2 | 10.0.0 ~ 10.0.19042.1052 |
cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1052:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows 10 Version 1507 | 10.0.0 ~ 10.0.10240.18967 |
cpe:2.3:o:microsoft:windows_10_1507:10.0.10240.18967:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows 10 Version 1607 | 10.0.0 ~ 10.0.14393.4467 |
cpe:2.3:o:microsoft:windows_10_1607:10.0.14393.4467:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows Server 2016 | 10.0.0 ~ 10.0.14393.4467 |
cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4467:*:*:*:*:*:*:*
|
|
| Microsoft | Windows 7 | 6.1.0 ~ 6.1.7601.25632 |
cpe:2.3:o:microsoft:windows_7:6.1.7601.25632:sp1:*:*:*:*:x86:*
|
|
| Microsoft | Windows 7 Service Pack 1 | 6.1.0 ~ 6.1.7601.25632 |
cpe:2.3:o:microsoft:windows_7:6.1.7601.25632:sp1:*:*:*:*:x64:*
|
|
| Microsoft | Windows 8.1 | 6.3.0 ~ 6.3.9600.20045 |
cpe:2.3:o:microsoft:windows_8.1:6.3.9600.20045:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows Server 2008 Service Pack 2 | 6.0.0 ~ 6.0.6003.21137 |
cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21137:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows Server 2008 Service Pack 2 | 6.0.0 ~ 6.0.6003.21137 |
cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21137:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 | 6.1.0 ~ 6.1.7601.25632 |
cpe:2.3:o:microsoft:windows_server_2008_R2:6.1.7601.25632:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows Server 2012 | 6.2.0 ~ 6.2.9200.23372 |
cpe:2.3:o:microsoft:windows_server_2012:6.2.9200.23372:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows Server 2012 R2 | 6.3.0 ~ 6.3.9600.20045 |
cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20045:*:*:*:*:*:x64:*
|
|
II. Public POCs for CVE-2021-33742
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Same Patch Batch · Microsoft · 2021-06-08 · 50 CVEs total
| CVE-2021-31962 | 9.4 CRITICAL | Kerberos AppContainer Security Feature Bypass Vulnerability |
| CVE-2021-31977 | 8.6 HIGH | Windows Hyper-V Denial of Service Vulnerability |
| CVE-2021-33739 | 8.4 HIGH | Microsoft DWM Core Library Elevation of Privilege Vulnerability |
| CVE-2021-33741 | 8.2 HIGH | Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability |
| CVE-2021-31980 | 8.1 HIGH | Microsoft Intune Management Extension Remote Code Execution Vulnerability |
| CVE-2021-31983 | 7.8 HIGH | Paint 3D Remote Code Execution Vulnerability |
| CVE-2021-31942 | 7.8 HIGH | 3D Viewer Remote Code Execution Vulnerability |
| CVE-2021-31969 | 7.8 HIGH | Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability |
| CVE-2021-31973 | 7.8 HIGH | Windows GPSVC Elevation of Privilege Vulnerability |
| CVE-2021-31940 | 7.8 HIGH | Microsoft Office Graphics Remote Code Execution Vulnerability |
| CVE-2021-31939 | 7.8 HIGH | Microsoft Excel Remote Code Execution Vulnerability |
| CVE-2021-31941 | 7.8 HIGH | Microsoft Office Graphics Remote Code Execution Vulnerability |
| CVE-2021-31943 | 7.8 HIGH | 3D Viewer Remote Code Execution Vulnerability |
| CVE-2021-31956 | 7.8 HIGH | Windows NTFS Elevation of Privilege Vulnerability |
| CVE-2021-31954 | 7.8 HIGH | Windows Common Log File System Driver Elevation of Privilege Vulnerability |
| CVE-2021-31952 | 7.8 HIGH | Windows Kernel-Mode Driver Elevation of Privilege Vulnerability |
| CVE-2021-31953 | 7.8 HIGH | Windows Filter Manager Elevation of Privilege Vulnerability |
| CVE-2021-31951 | 7.8 HIGH | Windows Kernel Elevation of Privilege Vulnerability |
| CVE-2021-31945 | 7.8 HIGH | Paint 3D Remote Code Execution Vulnerability |
| CVE-2021-31946 | 7.8 HIGH | Paint 3D Remote Code Execution Vulnerability |
Showing top 20 of 50 CVEs. View all on vendor page → →
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