CVE-2021-26442— Windows HTTP.sys Elevation of Privilege Vulnerability
Quick assessment
Affected
Microsoft Windows 10 Version 1809
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 HTTP.sys是美国微软（Microsoft）公司的一个应用协议。HTTP应用协议。 Microsoft HTTP.sys 存在权限许可和访问控制问题漏洞。以下产品和版本受到影响：Windows Server version 20H2 (Server Core Installation)，Windows 11 for x64-based Systems，Windows 11 for ARM64-based Systems等。
Possible ATT&CK Techniques 1 AI
T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2021-26442
Vulnerability Information
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Vulnerability Title
Windows HTTP.sys Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Windows HTTP.sys Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/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 权限许可和访问控制问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft HTTP.sys是美国微软（Microsoft）公司的一个应用协议。HTTP应用协议。 Microsoft HTTP.sys 存在权限许可和访问控制问题漏洞。以下产品和版本受到影响：Windows Server version 20H2 (Server Core Installation)，Windows 11 for x64-based Systems，Windows 11 for ARM64-based Systems等。
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 1809 | 10.0.0 ~ 10.0.17763.2237 |
cpe:2.3:o:microsoft:windows_10_1809:10.0.17763.2237:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows Server 2019 | 10.0.0 ~ 10.0.17763.2237 |
cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2237:*:*:*:*:*:*:*
|
|
| Microsoft | Windows Server 2019 (Server Core installation) | 10.0.0 ~ 10.0.17763.2237 |
cpe:2.3:o:microsoft:windows_server_2019:10.0.17763.2237:*:*:*:*:*:*:*
|
|
| Microsoft | Windows 10 Version 1909 | 10.0.0 ~ 10.0.18363.1854 |
cpe:2.3:o:microsoft:windows_10_1909:10.0.18363.1854:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows 10 Version 21H1 | 10.0.0 ~ 10.0.19043.1288 |
cpe:2.3:o:microsoft:windows_10_21H1:10.0.19043.1288:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows Server 2022 | 10.0.0 ~ 10.0.20348.288 |
cpe:2.3:o:microsoft:windows_server_2022:10.0.20348.288:*:*:*:*:*:*:*
|
|
| Microsoft | Windows 10 Version 2004 | 10.0.0 ~ 10.0.19041.1288 |
cpe:2.3:o:microsoft:windows_10_1809:10.0.19041.1288:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows Server version 2004 | 10.0.0 ~ 10.0.19041.1288 |
cpe:2.3:o:microsoft:windows_server_2004:10.0.19041.1288:*:*:*:*:*:*:*
|
|
| Microsoft | Windows 10 Version 20H2 | 10.0.0 ~ 10.0.19042.1288 |
cpe:2.3:o:microsoft:windows_10_20H2:10.0.19042.1288:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows Server version 20H2 | 10.0.0 ~ 10.0.19042.1288 |
cpe:2.3:o:microsoft:windows_server_20H2:10.0.19042.1288:*:*:*:*:*:*:*
|
|
| Microsoft | Windows 11 version 21H2 | 10.0.0 ~ 10.0.22000.258 |
cpe:2.3:o:microsoft:windows_11_21H2:10.0.22000.258:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows 10 Version 1507 | 10.0.0 ~ 10.0.10240.19086 |
cpe:2.3:o:microsoft:windows_10_1507:10.0.10240.19086:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows 10 Version 1607 | 10.0.0 ~ 10.0.14393.4704 |
cpe:2.3:o:microsoft:windows_10_1607:10.0.14393.4704:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows Server 2016 | 10.0.0 ~ 10.0.14393.4704 |
cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4704:*:*:*:*:*:*:*
|
|
| Microsoft | Windows Server 2016 (Server Core installation) | 10.0.0 ~ 10.0.14393.4704 |
cpe:2.3:o:microsoft:windows_server_2016:10.0.14393.4704:*:*:*:*:*:*:*
|
|
| Microsoft | Windows 7 | 6.1.0 ~ 6.1.7601.25740 |
cpe:2.3:o:microsoft:windows_7:6.1.7601.25740:sp1:*:*:*:*:x86:*
|
|
| Microsoft | Windows 7 Service Pack 1 | 6.1.0 ~ 6.1.7601.25740 |
cpe:2.3:o:microsoft:windows_7:6.1.7601.25740:sp1:*:*:*:*:x64:*
|
|
| Microsoft | Windows 8.1 | 6.3.0 ~ 6.3.9600.20144 |
cpe:2.3:o:microsoft:windows_8.1:6.3.9600.20144:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows Server 2008 Service Pack 2 | 6.0.0 ~ 6.0.6003.21251 |
cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21251:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows Server 2008 Service Pack 2 (Server Core installation) | 6.0.0 ~ 6.0.6003.21251 |
cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21251:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows Server 2008 Service Pack 2 | 6.0.0 ~ 6.0.6003.21251 |
cpe:2.3:o:microsoft:windows_server_2008_sp2:6.0.6003.21251:*:*:*:*:*:x86:*
|
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 | 6.1.0 ~ 6.1.7601.25740 |
cpe:2.3:o:microsoft:windows_server_2008_R2:6.1.7601.25740:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows Server 2008 R2 Service Pack 1 (Server Core installation) | 6.0.0 ~ 6.1.7601.25740 |
cpe:2.3:o:microsoft:windows_server_2008_R2:6.1.7601.25740:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows Server 2012 | 6.2.0 ~ 6.2.9200.23490 |
cpe:2.3:o:microsoft:windows_server_2012:6.2.9200.23490:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.0 ~ 6.2.9200.23490 |
cpe:2.3:o:microsoft:windows_server_2012:6.2.9200.23490:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows Server 2012 R2 | 6.3.0 ~ 6.3.9600.20144 |
cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20144:*:*:*:*:*:x64:*
|
|
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.0 ~ 6.3.9600.20144 |
cpe:2.3:o:microsoft:windows_server_2012_R2:6.3.9600.20144:*:*:*:*:*:x64:*
|
|
II. Public POCs for CVE-2021-26442
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2021-26442 (1)
Same Patch Batch · Microsoft · 2021-10-13 · 71 CVEs total
| CVE-2021-26427 | 9.0 CRITICAL | Microsoft Exchange Server Remote Code Execution Vulnerability |
| CVE-2021-36970 | 8.8 HIGH | Windows Print Spooler Spoofing Vulnerability |
| CVE-2021-41344 | 8.1 HIGH | Microsoft SharePoint Server Remote Code Execution Vulnerability |
| CVE-2021-40487 | 8.1 HIGH | Microsoft SharePoint Server Remote Code Execution Vulnerability |
| CVE-2021-41348 | 8.0 HIGH | Microsoft Exchange Server Elevation of Privilege Vulnerability |
| CVE-2021-40461 | 8.0 HIGH | Windows Hyper-V Remote Code Execution Vulnerability |
| CVE-2021-38672 | 8.0 HIGH | Windows Hyper-V Remote Code Execution Vulnerability |
| CVE-2021-40464 | 8.0 HIGH | Windows Nearby Sharing Elevation of Privilege Vulnerability |
| CVE-2021-40450 | 7.8 HIGH | Win32k Elevation of Privilege Vulnerability |
| CVE-2021-40462 | 7.8 HIGH | Windows Media Foundation Dolby Digital Atmos Decoders Remote Code Execution Vulnerability |
| CVE-2021-40449 | 7.8 HIGH | Win32k Elevation of Privilege Vulnerability |
| CVE-2021-40473 | 7.8 HIGH | Microsoft Excel Remote Code Execution Vulnerability |
| CVE-2021-40474 | 7.8 HIGH | Microsoft Excel Remote Code Execution Vulnerability |
| CVE-2021-40477 | 7.8 HIGH | Windows Event Tracing Elevation of Privilege Vulnerability |
| CVE-2021-40478 | 7.8 HIGH | Storage Spaces Controller Elevation of Privilege Vulnerability |
| CVE-2021-40480 | 7.8 HIGH | Microsoft Office Visio Remote Code Execution Vulnerability |
| CVE-2021-40485 | 7.8 HIGH | Microsoft Excel Remote Code Execution Vulnerability |
| CVE-2021-40486 | 7.8 HIGH | Microsoft Word Remote Code Execution Vulnerability |
| CVE-2021-40479 | 7.8 HIGH | Microsoft Excel Remote Code Execution Vulnerability |
| CVE-2021-40467 | 7.8 HIGH | Windows Common Log File System Driver Elevation of Privilege Vulnerability |
Showing top 20 of 71 CVEs. View all on vendor page → →
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V. Comments for CVE-2021-26442
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