CVE-2021-31166 :: Enginsight Vulnerability Database

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	9.8 CRITICAL	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
microsoft	CNA	9.8 CRITICAL				CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Base Score

CVSS 3.x

EPSS Score

Percentile: 99%

Affected Products (NVD)

Vendor	Product	Version
microsoft	windows_10_2004	𝑥 < 10.0.19041.982
microsoft	windows_10_20h2	𝑥 < 10.0.19042.982
microsoft	windows_server_2004	𝑥 < 10.0.19041.982
microsoft	windows_server_20h2	𝑥 < 10.0.19042.982

𝑥

= Vulnerable software versions

Windows Releases

Platform

Version

Windows 10

2004 (arm64, x64, x86)	KB5003173
20H2 (arm64, x86)	KB5003173

Windows Server

2004 Server Core	KB5003173
20H2 Server Core	KB5003173

Common Weakness Enumeration

CWE-416 - Use After Free
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

References

http://packetstormsecurity.com/files/162722/Microsoft-HTTP-Protocol-Stack-Remote-Code-Execution.html

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31166

http://packetstormsecurity.com/files/162722/Microsoft-HTTP-Protocol-Stack-Remote-Code-Execution.html

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31166

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31166