CVE-2021-26431— Windows Recovery Environment Agent Elevation of Privilege Vulnerability
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I. Basic Information for CVE-2021-26431
Vulnerability Information
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Vulnerability Title
Windows Recovery Environment Agent Elevation of Privilege Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
Windows Recovery Environment Agent Elevation of Privilege Vulnerability
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Microsoft Windows Update Assistant 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows Update Assistant是美国微软（Microsoft）公司的一款系统更新工具。 Microsoft Windows Update Assistant 存在安全漏洞。以下产品和版本受到影响：Windows 10 Version 21H1 for ARM64-based Systems，Windows 10 Version 21H1 for 32-bit Systems，Windows 10 Version 2004 for 32-bit Systems，Wind
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 21H1 | 10.0.0 ~ 10.0.19043.1165 | cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1165:*:*:*:*:*:x64:* | |
| Microsoft | Windows 10 Version 2004 | 10.0.0 ~ 10.0.19041.1165 | cpe:2.3:o:microsoft:windows_10_1809:10.0.19041.1165:*:*:*:*:*:x64:* | |
| Microsoft | Windows Server version 2004 | 10.0.0 ~ 10.0.19041.1165 | cpe:2.3:o:microsoft:windows_server_2004:10.0.19041.1165:*:*:*:*:*:*:* | |
| Microsoft | Windows 10 Version 20H2 | 10.0.0 ~ 10.0.19042.1165 | cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1165:*:*:*:*:*:x86:* | |
| Microsoft | Windows Server version 20H2 | 10.0.0 ~ 10.0.19042.1165 | cpe:2.3:o:microsoft:windows_server_20H2:10.0.19042.1165:*:*:*:*:*:*:* |
II. Public POCs for CVE-2021-26431
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://www.zerodayinitiative.com/advisories/ZDI-21-1053/x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2021-26431
Same Patch Batch · Microsoft · 2021-08-12 · 45 CVEs total
| CVE-2021-26424 | 9.9 CRITICAL | Windows TCP/IP Remote Code Execution Vulnerability |
| CVE-2021-26432 | 9.8 CRITICAL | Windows Services for NFS ONCRPC XDR Driver Remote Code Execution Vulnerability |
| CVE-2021-36947 | 8.8 HIGH | Windows Print Spooler Remote Code Execution Vulnerability |
| CVE-2021-34535 | 8.8 HIGH | Remote Desktop Client Remote Code Execution Vulnerability |
| CVE-2021-36936 | 8.8 HIGH | Windows Print Spooler Remote Code Execution Vulnerability |
| CVE-2021-34524 | 8.1 HIGH | Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability |
| CVE-2021-34537 | 7.8 HIGH | Windows Bluetooth Driver Elevation of Privilege Vulnerability |
| CVE-2021-36958 | 7.8 HIGH | Windows Print Spooler Remote Code Execution Vulnerability |
| CVE-2021-34478 | 7.8 HIGH | Microsoft Office Remote Code Execution Vulnerability |
| CVE-2021-26425 | 7.8 HIGH | Windows Event Tracing Elevation of Privilege Vulnerability |
| CVE-2021-36948 | 7.8 HIGH | Windows Update Medic Service Elevation of Privilege Vulnerability |
| CVE-2021-36941 | 7.8 HIGH | Microsoft Word Remote Code Execution Vulnerability |
| CVE-2021-34483 | 7.8 HIGH | Windows Print Spooler Elevation of Privilege Vulnerability |
| CVE-2021-36927 | 7.8 HIGH | Windows Digital TV Tuner device registration application Elevation of Privilege Vulnerabil |
| CVE-2021-34484 | 7.8 HIGH | Windows User Profile Service Elevation of Privilege Vulnerability |
| CVE-2021-36937 | 7.8 HIGH | Windows Media MPEG-4 Video Decoder Remote Code Execution Vulnerability |
| CVE-2021-34536 | 7.8 HIGH | Storage Spaces Controller Elevation of Privilege Vulnerability |
| CVE-2021-34486 | 7.8 HIGH | Windows Event Tracing Elevation of Privilege Vulnerability |
| CVE-2021-34533 | 7.8 HIGH | Windows Graphics Component Font Parsing Remote Code Execution Vulnerability |
| CVE-2021-34530 | 7.8 HIGH | Windows Graphics Component Remote Code Execution Vulnerability |
Showing top 20 of 45 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Windows 10 Version 21H1
- CVE-2022-44684
Windows Local Session Manager (LSM) Denial of Service Vulner - CVE-2022-41114
Windows Bind Filter Driver Elevation of Privilege Vulnerabil - CVE-2022-41092
Windows Win32k Elevation of Privilege Vulnerability - CVE-2022-37974
Windows Mixed Reality Developer Tools Information Disclosure - CVE-2022-37973
Windows Local Session Manager (LSM) Denial of Service Vulner
Same vendor: Microsoft
- CVE-2026-42826
Azure DevOps Information Disclosure Vulnerability - CVE-2026-35428
Azure Cloud Shell Spoofing Vulnerability - CVE-2026-35435
Azure AI Foundry Elevation of Privilege Vulnerability - CVE-2026-34327
Microsoft Partner Center Spoofing Vulnerability - CVE-2026-33844
Azure Managed Instance for Apache Cassandra Remote Code Exec
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