Technical Severity
HIGH
CVSS v3.1 Metrics
8.4
/ 10
Minimal Risk
Critical
Vector Specification
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C
Exploitation Likelihood
EPSS Prediction
92.73
%
Predictive Probability
Percentile Rank
99.7
th
Documented as more likely to be exploited than 99.7% of known CVEs.
Detection Date
Nov 03, 2021
Remediation Due
May 03, 2022
CISA Catalog Active
Threat Analysis
Microsoft Exchange Server improperly validates cmdlet arguments which allow an attacker to perform remote code execution.
Remediation Directive
Apply updates per vendor instructions.