// For flags

CVE-2021-31166

Microsoft HTTP Protocol Stack Remote Code Execution Vulnerability

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

10
*Multiple Sources

Exploited in Wild

Yes
*KEV

Decision

-
*SSVC
Descriptions

HTTP Protocol Stack Remote Code Execution Vulnerability

Una vulnerabilidad de Ejecución de Código Remota de HTTP Protocol Stack

Microsoft HTTP Protocol Stack contains a vulnerability in http.sys that allows for remote code execution.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-04-14 CVE Reserved
  • 2021-05-11 CVE Published
  • 2021-05-17 First Exploit
  • 2022-04-06 Exploited in Wild
  • 2022-04-27 KEV Due Date
  • 2024-08-03 CVE Updated
  • 2024-10-14 EPSS Updated
CWE
  • CWE-416: Use After Free
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Microsoft
Search vendor "Microsoft"
Windows 10 2004
Search vendor "Microsoft" for product "Windows 10 2004"
< 10.0.19041.982
Search vendor "Microsoft" for product "Windows 10 2004" and version " < 10.0.19041.982"
-
Affected
Microsoft
Search vendor "Microsoft"
Windows 10 20h2
Search vendor "Microsoft" for product "Windows 10 20h2"
< 10.0.19042.982
Search vendor "Microsoft" for product "Windows 10 20h2" and version " < 10.0.19042.982"
-
Affected
Microsoft
Search vendor "Microsoft"
Windows Server 2004
Search vendor "Microsoft" for product "Windows Server 2004"
< 10.0.19041.982
Search vendor "Microsoft" for product "Windows Server 2004" and version " < 10.0.19041.982"
-
Affected
Microsoft
Search vendor "Microsoft"
Windows Server 20h2
Search vendor "Microsoft" for product "Windows Server 20h2"
< 10.0.19042.982
Search vendor "Microsoft" for product "Windows Server 20h2" and version " < 10.0.19042.982"
-
Affected