HTTP Protocol Stack Remote Code Execution Vulnerability
Priority CRITICAL 100Exploited in the wildCWE-416Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-416 and the CVSS impact.
Summary
HTTP Protocol Stack Remote Code Execution Vulnerability
Why it matters now
Exploitation Active In CISA KEV since 2022-04-06CISA due date 2022-04-27
EPSS 0.99867 99th percentileScored 2026-11-07
Fix Fixed Windows 10 Version 2004 (Microsoft): 10.0.19041.982Windows Server version 2004 (Microsoft): 10.0.19041.982+2 more products
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Active
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Windows 10 Version 2004 | 10.0.0 to before 10.0.19041.982 | 10.0.19041.982 | Patch available | CNA |
| Microsoft | Windows Server version 2004 | 10.0.0 to before 10.0.19041.982 | 10.0.19041.982 | Patch available | CNA |
| Microsoft | Windows 10 Version 20H2 | 10.0.0 to before 10.0.19042.982 | 10.0.19042.982 | Patch available | CNA |
| Microsoft | Windows Server version 20H2 | 10.0.0 to before 10.0.19042.982 | 10.0.19042.982 | Patch available | CNA |
- Windows 10 Version 2004 VendorMicrosoft Affected 10.0.0 to before 10.0.19041.982 Fixed in 10.0.19041.982 Patch available CNA
- Windows Server version 2004 VendorMicrosoft Affected 10.0.0 to before 10.0.19041.982 Fixed in 10.0.19041.982 Patch available CNA
- Windows 10 Version 20H2 VendorMicrosoft Affected 10.0.0 to before 10.0.19042.982 Fixed in 10.0.19042.982 Patch available CNA
- Windows Server version 20H2 VendorMicrosoft Affected 10.0.0 to before 10.0.19042.982 Fixed in 10.0.19042.982 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:* | before 10.0.19041.982 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:* | before 10.0.19042.982 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:* | before 10.0.19041.982 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:* | before 10.0.19042.982 | Vulnerable | Microsoft |
- cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:* Versions before 10.0.19041.982 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:* Versions before 10.0.19042.982 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:* Versions before 10.0.19041.982 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:* Versions before 10.0.19042.982 Vulnerable ·Microsoft
Remediation
- Fix · CNA Windows 10 Version 2004 (Microsoft) Fixed in 10.0.19041.982
- Fix · CNA Windows Server version 2004 (Microsoft) Fixed in 10.0.19041.982
- Fix · CNA Windows 10 Version 20H2 (Microsoft) Fixed in 10.0.19042.982
- Fix · CNA Windows Server version 20H2 (Microsoft) Fixed in 10.0.19042.982
Timeline
- 2022-04-06 Added to CISA KEV
- 2026-10-02 Threatist record created from CVE-2021-31166
- 2026-10-03 Alias added: GHSA-3mj9-c62w-jw5w
References
More Microsoft Windows 10 2004 vulnerabilities
- TI-2021-17496 Microsoft MSHTML Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2021-13480 Scripting Engine Memory Corruption Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2021-13116 Windows MSHTML Platform Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2021-13113 Microsoft DWM Core Library Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.4
- TI-2021-19234 Windows Common Log File System Driver Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 7.8
- TI-2021-18198 Windows Installer Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 7.8
Sources
- CVE-2021-31166 · CVE Program
- CVE-2021-31166 · NVD
- CISA Known Exploited Vulnerabilities
- FIRST EPSS
- GHSA-3mj9-c62w-jw5w · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences