CVE-2021-31166

KEV
Published: Mag 11, 2021 Last Modified: Ott 30, 2025
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,8
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
HIGH 7,5
Source: [email protected]
Access Vector: network
Access Complexity: low
Authentication: none
Confidentiality: partial
Integrity: partial
Availability: partial

Description

AI Translation Available

HTTP Protocol Stack Remote Code Execution Vulnerability

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,9307
Percentile
1,0th
Updated

EPSS Score Trend (Last 90 Days)

416

Use After Free

Stable
Abstraction: Variant Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Availability Confidentiality
Potential Impacts:
Modify Memory Dos: Crash, Exit, Or Restart Execute Unauthorized Code Or Commands
Applicable Platforms
Languages: C, C++, Memory-Unsafe
Likelihood of Exploit: High
View CWE Details
Operating System

Windows 10 20H2 by Microsoft

Product Information
Vendor Microsoft
Product Windows 10 20H2
Version Range Affected
To 10.0.19042.982 (exclusive)
cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Windows Server 2004 by Microsoft

Product Information
Vendor Microsoft
Product Windows Server 2004
Version Range Affected
To 10.0.19041.982 (exclusive)
cpe:2.3:o:microsoft:windows_server_2004:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Windows 10 2004 by Microsoft

Product Information
Vendor Microsoft
Product Windows 10 2004
Version Range Affected
To 10.0.19041.982 (exclusive)
cpe:2.3:o:microsoft:windows_10_2004:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
Operating System

Windows Server 20H2 by Microsoft

Product Information
Vendor Microsoft
Product Windows Server 20H2
Version Range Affected
To 10.0.19042.982 (exclusive)
cpe:2.3:o:microsoft:windows_server_20h2:*:*:*:*:*:*:*:*
Common Platform Enumeration - Standardized vulnerability identification
https://www.cisa.gov/known-exploited-vulnerabilities-catalo…
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021…
http://packetstormsecurity.com/files/162722/Microsoft-HTTP-…
http://packetstormsecurity.com/files/162722/Microsoft-HTTP-Protocol-Stack-Remot…
https://portal.msrc.microsoft.com/en-US/security-guidance/a…
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-311…
http://packetstormsecurity.com/files/162722/Microsoft-HTTP-…
http://packetstormsecurity.com/files/162722/Microsoft-HTTP-Protocol-Stack-Remot…
https://portal.msrc.microsoft.com/en-US/security-guidance/a…
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-311…