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CVE-2021-38632— Windows BitLocker Security Feature Bypass Vulnerability

Quick assessment

Affected
Microsoft Windows 10 Version 1607
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Windows BitLocker是美国微软（Microsoft）公司的BitLocker 确保在激活保护之前安全备份恢复密钥。 Microsoft Windows BitLocker存在安全特征问题漏洞。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 S

CVSS 5.7 · Medium EPSS 0.82% · P55

Possible ATT&CK Techniques 1 AI

T1562.001

Affected Version Matrix 14

VendorProduct Version RangeStatus
Microsoft Windows 10 Version 1607 10.0.14393.0< 10.0.14393.4651 affected
Microsoft Windows 10 Version 1809 10.0.17763.0< 10.0.17763.2183 affected
10.0.0< 10.0.17763.2183 affected
Microsoft Windows 10 Version 1909 10.0.0< 10.0.18363.1801 affected
Microsoft Windows 10 Version 2004 10.0.0< 10.0.19041.1237 affected
Microsoft Windows 10 Version 20H2 10.0.0< 10.0.19042.1237 affected
Microsoft Windows 10 Version 21H1 10.0.0< 10.0.19043.1237 affected
Microsoft Windows Server 2016 10.0.14393.0< 10.0.14393.4651 affected
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0< 10.0.14393.4651 affected
Microsoft Windows Server 2019 10.0.17763.0< 10.0.17763.2183 affected
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0< 10.0.17763.2183 affected
Microsoft Windows Server 2022 10.0.20348.0< 10.0.20348.230 affected
Microsoft Windows Server version 2004 10.0.0< 10.0.19041.1237 affected
Microsoft Windows Server version 20H2 10.0.0< 10.0.19042.1237 affected
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I. Basic Information for CVE-2021-38632

Vulnerability Information
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Vulnerability Title
Windows BitLocker Security Feature Bypass Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Windows BitLocker Security Feature Bypass Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Windows BitLocker 安全特征问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Windows BitLocker是美国微软（Microsoft）公司的BitLocker 确保在激活保护之前安全备份恢复密钥。 Microsoft Windows BitLocker存在安全特征问题漏洞。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 S
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 1607 10.0.14393.0 ~ 10.0.14393.4651 -
Microsoft Windows 10 Version 1809 10.0.17763.0 ~ 10.0.17763.2183 -
Microsoft Windows 10 Version 1809 10.0.0 ~ 10.0.17763.2183 -
Microsoft Windows 10 Version 1909 10.0.0 ~ 10.0.18363.1801 -
Microsoft Windows 10 Version 2004 10.0.0 ~ 10.0.19041.1237 -
Microsoft Windows 10 Version 20H2 10.0.0 ~ 10.0.19042.1237 -
Microsoft Windows 10 Version 21H1 10.0.0 ~ 10.0.19043.1237 -
Microsoft Windows Server 2016 10.0.14393.0 ~ 10.0.14393.4651 -
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 ~ 10.0.14393.4651 -
Microsoft Windows Server 2019 10.0.17763.0 ~ 10.0.17763.2183 -
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 ~ 10.0.17763.2183 -
Microsoft Windows Server 2022 10.0.20348.0 ~ 10.0.20348.230 -
Microsoft Windows Server version 2004 10.0.0 ~ 10.0.19041.1237 -
Microsoft Windows Server version 20H2 10.0.0 ~ 10.0.19042.1237 -

II. Public POCs for CVE-2021-38632

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III. Intelligence Information for CVE-2021-38632

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Vendor Advisories for CVE-2021-38632 (1)

Same Patch Batch · Microsoft · 2021-09-15 · 61 CVEs total

CVE-2021-38647 9.8 CRITICAL Open Management Infrastructure (OMI) Remote Code Execution Vulnerability
CVE-2021-36954 8.8 HIGH Windows Bind Filter Driver Elevation of Privilege Vulnerability
CVE-2021-40444 8.8 HIGH Microsoft MSHTML Remote Code Execution Vulnerability
CVE-2021-36965 8.8 HIGH Windows WLAN AutoConfig Service Remote Code Execution Vulnerability
CVE-2021-26435 8.1 HIGH Windows Scripting Engine Memory Corruption Vulnerability
CVE-2021-36967 8.0 HIGH Windows WLAN AutoConfig Service Elevation of Privilege Vulnerability
CVE-2021-38644 7.8 HIGH Microsoft MPEG-2 Video Extension Remote Code Execution Vulnerability
CVE-2021-38626 7.8 HIGH Windows Kernel Elevation of Privilege Vulnerability
CVE-2021-38648 7.8 HIGH Open Management Infrastructure Elevation of Privilege Vulnerability
CVE-2021-38653 7.8 HIGH Microsoft Office Visio Remote Code Execution Vulnerability
CVE-2021-38654 7.8 HIGH Microsoft Office Visio Remote Code Execution Vulnerability
CVE-2021-38655 7.8 HIGH Microsoft Excel Remote Code Execution Vulnerability
CVE-2021-38646 7.8 HIGH Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability
CVE-2021-38658 7.8 HIGH Microsoft Office Graphics Remote Code Execution Vulnerability
CVE-2021-38659 7.8 HIGH Microsoft Office Graphics Remote Code Execution Vulnerability
CVE-2021-38660 7.8 HIGH Microsoft Office Graphics Remote Code Execution Vulnerability
CVE-2021-38633 7.8 HIGH Windows Common Log File System Driver Elevation of Privilege Vulnerability
CVE-2021-38630 7.8 HIGH Windows Event Tracing Elevation of Privilege Vulnerability
CVE-2021-38628 7.8 HIGH Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability
CVE-2021-38656 7.8 HIGH Microsoft Word Remote Code Execution Vulnerability

Showing top 20 of 61 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Windows 10 Version 1607
Same vendor: Microsoft

V. Comments for CVE-2021-38632

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