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CVE-2021-26414— Windows DCOM Server Security Feature Bypass

Quick assessment

Affected

Microsoft Windows 10 Version 1809

Exploitation

Public or AI PoC available; prioritize validation

Recommended action

Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Windows和Windows都是美国微软（Microsoft）公司的产品。Microsoft Windows是一套个人设备使用的操作系统。Windows是一种桌面操作系统。 Windows DCOM Server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 AR

CVSS 4.8 · Medium EPSS 49.84% · P99 Updated Feb 25, 2026

Possible ATT&CK Techniques 2 AI

T1014 · Rootkit T1055 · Process Injection

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I. Basic Information for CVE-2021-26414

Vulnerability Information

Have questions about the vulnerability? See if Shenlong's analysis helps!

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Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title

Windows DCOM Server Security Feature Bypass

Source: CVE Program / CVE List V5

Vulnerability Description

Windows DCOM Server Security Feature Bypass

Source: CVE Program / CVE List V5

CVSS Information

CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:H/A:N

Source: CVE Program / CVE List V5

Vulnerability Type

N/A

Source: CVE Program / CVE List V5

Vulnerability Title

Windows DCOM Server 安全特征问题漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

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
Microsoft	Windows 10 Version 1809	10.0.0 ~ 10.0.17763.4131	`cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.4131::::::x86:`
Microsoft	Windows Server 2019	10.0.0 ~ 10.0.17763.4131	`cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.4131:::::::*`
Microsoft	Windows Server 2019 (Server Core installation)	10.0.0 ~ 10.0.17763.4131	`cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.4131:::::::*`
Microsoft	Windows 10 Version 1909	10.0.0 ~ 10.0.18363.2344	`cpe:2.3:o:microsoft:windows_10_1909:10.0.18363.2344::::::x86:`
Microsoft	Windows 10 Version 21H1	10.0.0 ~ 10.0.19043.1766	`cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1766::::::x64:`
Microsoft	Windows Server 2022	10.0.0 ~ 10.0.20348.1607	`cpe:2.3:o:microsoft:windows_server_2022:10.0.20348.1607:::::::*`
Microsoft	Windows 10 Version 20H2	10.0.0 ~ 10.0.19042.2728	`cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.2728::::::x86:`
Microsoft	Windows 11 version 21H2	10.0.0 ~ 10.0.22000.1696	`cpe:2.3:o:microsoft:windows_11_21H2:10.0.22000.1696::::::x64:`
Microsoft	Windows 10 Version 21H2	10.0.0 ~ 10.0.19044.2728	`cpe:2.3:o:microsoft:windows_10_21H2:10.0.19044.2728::::::x86:`
Microsoft	Windows 10 Version 1507	10.0.0 ~ 10.0.10240.19802	`cpe:2.3:o:microsoft:windows_10_1507:10.0.10240.19802::::::x86:`
Microsoft	Windows 10 Version 1607	10.0.0 ~ 10.0.14393.5786	`cpe:2.3:o:microsoft:windows_10_1607:10.0.14393.5786::::::x86:`
Microsoft	Windows Server 2016	10.0.0 ~ 10.0.14393.5786	`cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.5786:::::::*`
Microsoft	Windows Server 2016 (Server Core installation)	10.0.0 ~ 10.0.14393.5786	`cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.5786:::::::*`
Microsoft	Windows 7	6.1.0 ~ 6.1.7601.25984	`cpe:2.3:o:microsoft:windows_7:6.1.7601.25984:sp1:::::x86:*`
Microsoft	Windows 7 Service Pack 1	6.1.0 ~ 6.1.7601.25984	`cpe:2.3:o:microsoft:windows_7:6.1.7601.25984:sp1:::::x64:*`
Microsoft	Windows 8.1	6.3.0 ~ 6.3.9600.20402	`cpe:2.3:o:microsoft:windows_8.1:6.3.9600.20402::::::x86:`
Microsoft	Windows Server 2008 Service Pack 2	6.0.0 ~ 6.0.6003.21966	`cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21966::::::x64:`
Microsoft	Windows Server 2008 Service Pack 2 (Server Core installation)	6.0.0 ~ 6.0.6003.21966	`cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21966::::::x64:`
Microsoft	Windows Server 2008 Service Pack 2	6.0.0 ~ 6.0.6003.21966	`cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21966::::::x86:`
Microsoft	Windows Server 2008 R2 Service Pack 1	6.1.0 ~ 6.1.7601.26415	`cpe:2.3:o:microsoft:windows_server_2008_R2:6.1.7601.26415::::::x64:`
Microsoft	Windows Server 2008 R2 Service Pack 1 (Server Core installation)	6.0.0 ~ 6.1.7601.26415	`cpe:2.3:o:microsoft:windows_server_2008_R2:6.1.7601.26415::::::x64:`
Microsoft	Windows Server 2012	6.2.0 ~ 6.2.9200.24168	`cpe:2.3:o:microsoft:windows_server_2012:6.2.9200.24168::::::x64:`
Microsoft	Windows Server 2012 (Server Core installation)	6.2.0 ~ 6.2.9200.24168	`cpe:2.3:o:microsoft:windows_server_2012:6.2.9200.24168::::::x64:`
Microsoft	Windows Server 2012 R2	6.3.0 ~ 6.3.9600.20865	`cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20865::::::x64:`
Microsoft	Windows Server 2012 R2 (Server Core installation)	6.3.0 ~ 6.3.9600.20865	`cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20865::::::x64:`

II. Public POCs for CVE-2021-26414

#	POC Description	Source Link	Shenlong Link
1	This script was created to automate addressing the vulnerability described in CVE-2021-26414 (https://support.microsoft.com/en-us/topic/kb5004442-manage-changes-for-windows-dcom-server-security-feature-bypass-cve-2021-26414-f1400b52-c141-43d2-941e-37ed901c769c), adds two regkeys under HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Ole\AppCompa	https://github.com/Nels2/dcom_10036_Solver	POC Details

AI-Generated POC Premium

No public POC found.

III. Intelligence Information for CVE-2021-26414

请登录查看更多情报信息。

Vendor Advisories for CVE-2021-26414 (1)

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26414 x_refsource_MISC

Exploits & Public PoCs for CVE-2021-26414 (1)

http://packetstormsecurity.com/files/163206/Windows-Kerberos-AppContainer-Enterprise-Authentication-Capability-Bypass.html x_refsource_MISC

https://www.cve.org/CVERecord?id=CVE-2021-26414

Same Patch Batch · Microsoft · 2021-06-08 · 50 CVEs total

CVE-2021-31962	9.4 CRITICAL	Kerberos AppContainer Security Feature Bypass Vulnerability
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CVE-2021-1675	7.8 HIGH	Windows Print Spooler Remote Code Execution Vulnerability
CVE-2021-31969	7.8 HIGH	Windows Cloud Files Mini Filter Driver Elevation of Privilege 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
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CVE-2021-31942	7.8 HIGH	3D Viewer Remote Code Execution Vulnerability
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CVE-2021-31941	7.8 HIGH	Microsoft Office Graphics Remote Code Execution Vulnerability
CVE-2021-31939	7.8 HIGH	Microsoft Excel Remote Code Execution Vulnerability
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Showing top 20 of 50 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Windows 10 Version 1809

Same vendor: Microsoft

V. Comments for CVE-2021-26414

No comments yet

Goal Reached Thanks to every supporter — we hit 100%!

CVE-2021-26414— Windows DCOM Server Security Feature Bypass

Quick assessment

Possible ATT&CK Techniques 2 AI

I. Basic Information for CVE-2021-26414

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2021-26414

III. Intelligence Information for CVE-2021-26414

Vendor Advisories for CVE-2021-26414 (1)

Exploits & Public PoCs for CVE-2021-26414 (1)

Same Patch Batch · Microsoft · 2021-06-08 · 50 CVEs total

IV. Related Vulnerabilities

V. Comments for CVE-2021-26414

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