Technical Severity
CRITICAL
CVSS v3.1 Metrics
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
Exploitation Likelihood
EPSS Prediction
90.15
%
Predictive Probability
Percentile Rank
99.6
th
Documented as more likely to be exploited than 99.6% of known CVEs.
Detection Date
Nov 03, 2021
Remediation Due
Nov 17, 2021
CISA Catalog Active
Threat Analysis
SonicWall Email Security contains an improper privilege management vulnerability that allows an attacker to create an administrative account by sending a crafted HTTP request to the remote host. This vulnerability has known usage in a SonicWall Email Security exploit chain along with CVE-2021-20022 and CVE-2021-20023 to achieve privilege escalation.
Remediation Directive
Apply updates per vendor instructions.