CVE-2021-31166
Summary
| CVE | CVE-2021-31166 |
|---|---|
| State | PUBLIC |
| Assigner | [email protected] |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2021-05-11 19:15:00 UTC |
| Updated | 2023-08-02 00:15:00 UTC |
| Description | HTTP Protocol Stack Remote Code Execution Vulnerability |
Risk And Classification
EPSS: 0.996570000 probability, percentile 0.999480000 (date 2026-07-22)
CISA KEV: Listed on 2022-04-06; due 2022-04-27; ransomware use Unknown
Problem Types: CWE-416
CISA Known Exploited Vulnerability
| Vendor | Microsoft |
|---|---|
| Product | HTTP Protocol Stack |
| Name | Microsoft HTTP Protocol Stack Remote Code Execution Vulnerability |
| Required Action | Apply updates per vendor instructions. |
| Notes | https://nvd.nist.gov/vuln/detail/CVE-2021-31166 |
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Microsoft | Windows 10 | 2004 | All | All | All |
| Operating System | Microsoft | Windows 10 | 20h2 | All | All | All |
| Operating System | Microsoft | Windows Server 2016 | 2004 | All | All | All |
| Operating System | Microsoft | Windows Server 2016 | 20h2 | All | All | All |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| Microsoft HTTP Protocol Stack Remote Code Execution ≈ Packet Storm | MISC | packetstormsecurity.com | |
| Security Update Guide - Microsoft Security Response Center | N/A | portal.msrc.microsoft.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
| CISA Known Exploited Vulnerabilities catalog | CISA | www.cisa.gov | kev |
No vendor comments have been submitted for this CVE.