CVE-2021-20021
CVSS v3
9.8
CRITICAL
EPSS Score
91.7 %
exploit probability
CISA KEV
Yes
known exploited
Exploitation
—
SSVC status
Description
A vulnerability in the SonicWall Email Security version 10.0.9.x allows an attacker to create an administrative account by sending a crafted HTTP request to the remote host.
CISA Known Exploited Vulnerability
- Date Added
- 2021-11-03
- Patch Due Date
- 2021-11-17
- Ransomware Use
- Known
Technical details
- Published
- 2021-04-09
Frequently asked questions
What is CVE-2021-20021?
A vulnerability in the SonicWall Email Security version 10.0.9.x allows an attacker to create an administrative account by sending a crafted HTTP request to the remote host.
Is CVE-2021-20021 actively exploited?
Yes. CVE-2021-20021 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2021-11-17.
What is the CVSS score for CVE-2021-20021?
CVE-2021-20021 has a CVSS v3 base score of 9.8 (CRITICAL severity).
Is CVE-2021-20021 affecting your environment?
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