Home / Vulnerabilities / CVE-2021-31166
CRITICAL SEVERITY
CVE-2021-31166 Microsoft · HTTP Protocol Stack

Microsoft HTTP Protocol Stack Remote Code Execution Vulnerability

Technical Severity

CVSS v3.1 Metrics

CRITICAL
9.8 / 10
Minimal Risk Critical
Vector Specification
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
Exploitation Likelihood

EPSS Prediction

93.07 %
Predictive Probability
Percentile Rank
99.8 th

Documented as more likely to be exploited than 99.8% of known CVEs.

Detection Date

Apr 06, 2022

Remediation Due

Apr 27, 2022

CISA Catalog Active

Threat Analysis

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

Remediation Directive

Apply updates per vendor instructions.

External Intelligence