CVE-2026-21510— Windows Shell Security Feature Bypass Vulnerability
Quick assessment
Affected
Microsoft Windows 10 Version 1607
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 Shell是美国微软（Microsoft）公司的Windows操作系统的图形用户界面。Windows shell易于识别的元素包括桌面、任务栏、开始菜单、任务切换器和自动播放等特征。在某些版本的Windows上，还包括Flip 3D和魅力等功能。 Microsoft Windows Shell存在安全漏洞。攻击者利用该漏洞可以绕过某些功能。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Systems,Windows 10
In-the-Wild Activity Observed
cisa_kev · confirmed
Affected Version Matrix 22
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | Windows 10 Version 1607 | 10.0.14393.0< 10.0.14393.8868 |
affected |
| Microsoft | Windows 10 Version 1809 | 10.0.17763.0< 10.0.17763.8389 |
affected |
| Microsoft | Windows 10 Version 21H2 | 10.0.19044.0< 10.0.19044.6937 |
affected |
| Microsoft | Windows 10 Version 22H2 | 10.0.19045.0< 10.0.19045.6937 |
affected |
| Microsoft | Windows 11 version 22H3 | 10.0.22631.0< 10.0.22631.6649 |
affected |
| Microsoft | Windows 11 Version 23H2 | 10.0.22631.0< 10.0.22631.6649 |
affected |
| Microsoft | Windows 11 Version 24H2 | 10.0.26100.0< 10.0.26100.7840 |
affected |
| Microsoft | Windows 11 Version 25H2 | 10.0.26200.0< 10.0.26200.7840 |
affected |
| Microsoft | Windows 11 version 26H1 | 10.0.28000.0< 10.0.28000.1575 |
affected |
| Microsoft | Windows 11 Version 26H1 | 10.0.28000.0< 10.0.28000.1575 |
affected |
| Microsoft | Windows Server 2012 | 6.2.9200.0< 6.2.9200.25923 |
affected |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0< 6.2.9200.25923 |
affected |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0< 6.3.9600.23022 |
affected |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0< 6.3.9600.23022 |
affected |
| Microsoft | Windows Server 2016 | 10.0.14393.0< 10.0.14393.8868 |
affected |
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.14393.0< 10.0.14393.8868 |
affected |
| Microsoft | Windows Server 2019 | 10.0.17763.0< 10.0.17763.8389 |
affected |
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.17763.0< 10.0.17763.8389 |
affected |
| Microsoft | Windows Server 2022 | 10.0.20348.0< 10.0.20348.4773 |
affected |
| Microsoft | Windows Server 2022, 23H2 Edition (Server Core installation) | 10.0.25398.0< 10.0.25398.2149 |
affected |
| Microsoft | Windows Server 2025 | 10.0.26100.0< 10.0.26100.32370 |
affected |
| Microsoft | Windows Server 2025 (Server Core installation) | 10.0.26100.0< 10.0.26100.32370 |
affected |
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I. Basic Information for CVE-2026-21510
Vulnerability Information
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Vulnerability Title
Windows Shell Security Feature Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Protection mechanism failure in Windows Shell allows an unauthorized attacker to bypass a security feature over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
保护机制失效
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows Shell 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows Shell是美国微软（Microsoft）公司的Windows操作系统的图形用户界面。Windows shell易于识别的元素包括桌面、任务栏、开始菜单、任务切换器和自动播放等特征。在某些版本的Windows上，还包括Flip 3D和魅力等功能。 Microsoft Windows Shell存在安全漏洞。攻击者利用该漏洞可以绕过某些功能。以下产品和版本受到影响：Windows 10 Version 1809 for 32-bit Systems,Windows 10
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
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Affected Products
II. Public POCs for CVE-2026-21510
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | CVE-2026-21510 (CVSS 8.8, Important) — Windows Shell security feature bypass. An attacker can trick a user into clicking a malicious link or shortcut file to bypass SmartScreen/Shell warnings and execute code without prompts. Publicly disclosed and exploited. | https://github.com/andreassudo/CVE-2026-21510-CVSS-8.8-Important-Windows-Shell-security-feature-bypass | POC Details |
AI-Generated POC
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Same Patch Batch · Microsoft · 2026-02-10 · 54 CVEs total
| CVE-2026-21531 | 9.8 CRITICAL | Azure SDK for Python Remote Code Execution Vulnerability |
| CVE-2026-21518 | 8.8 HIGH | GitHub Copilot and Visual Studio Code Security Feature Bypass Vulnerability |
| CVE-2026-21255 | 8.8 HIGH | Windows Hyper-V Security Feature Bypass Vulnerability |
| CVE-2026-21256 | 8.8 HIGH | GitHub Copilot and Visual Studio Remote Code Execution Vulnerability |
| CVE-2026-21513 | 8.8 HIGH | MSHTML Framework Security Feature Bypass Vulnerability |
| CVE-2026-21537 | 8.8 HIGH | Microsoft Defender for Endpoint Linux Extension Remote Code Execution Vulnerability |
| CVE-2026-21516 | 8.8 HIGH | GitHub Copilot for Jetbrains Remote Code Execution Vulnerability |
| CVE-2026-21228 | 8.1 HIGH | Azure Local Remote Code Execution Vulnerability |
| CVE-2026-21523 | 8.0 HIGH | GitHub Copilot and Visual Studio Code Remote Code Execution Vulnerability |
| CVE-2026-21229 | 8.0 HIGH | Power BI Remote Code Execution Vulnerability |
| CVE-2026-21257 | 8.0 HIGH | GitHub Copilot and Visual Studio Elevation of Privilege Vulnerability |
| CVE-2026-21239 | 7.8 HIGH | Windows Kernel Elevation of Privilege Vulnerability |
| CVE-2026-21514 | 7.8 HIGH | Microsoft Word Security Feature Bypass Vulnerability |
| CVE-2026-21240 | 7.8 HIGH | Windows HTTP.sys Elevation of Privilege Vulnerability |
| CVE-2026-20841 | 7.8 HIGH | Windows Notepad App Remote Code Execution Vulnerability |
| CVE-2026-21533 | 7.8 HIGH | Windows Remote Desktop Services Elevation of Privilege Vulnerability |
| CVE-2026-21236 | 7.8 HIGH | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability |
| CVE-2026-21246 | 7.8 HIGH | Windows Graphics Component Elevation of Privilege Vulnerability |
| CVE-2026-21259 | 7.8 HIGH | Microsoft Excel Elevation of Privilege Vulnerability |
| CVE-2026-21519 | 7.8 HIGH | Desktop Window Manager Elevation of Privilege Vulnerability |
Showing top 20 of 54 CVEs. View all on vendor page → →
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