CVE-2021-20021

CRITICALCISA KEV

9.8

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/9/2021

Last Modified11/10/2025

Sourcekev

Honeypot Sightings0

CISA KEV

VendorSonicWall

ProductSonicWall Email Security

Vulnerability NameSonicWall Email Security Improper Privilege Management Vulnerability

KEV Date Added2021-11-03

Remediation Due Date2021-11-17

Ransomware UseKnown

Affected Products

microsoft:windowssonicwall:email_securitysonicwall:email_security_appliance_3300sonicwall:email_security_appliance_3300_firmwaresonicwall:email_security_appliance_4300sonicwall:email_security_appliance_4300_firmwaresonicwall:email_security_appliance_5000sonicwall:email_security_appliance_5000_firmwaresonicwall:email_security_appliance_5050sonicwall:email_security_appliance_5050_firmwaresonicwall:email_security_appliance_7000sonicwall:email_security_appliance_7000_firmwaresonicwall:email_security_appliance_7050sonicwall:email_security_appliance_7050_firmwaresonicwall:email_security_appliance_8300sonicwall:email_security_appliance_8300_firmwaresonicwall:email_security_appliance_9000sonicwall:email_security_appliance_9000_firmwaresonicwall:email_security_virtual_appliancesonicwall:hosted_email_security

Weaknesses (CWE)

CWE-269CWE-269

References

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0007(PSIRT@sonicwall.com)

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0007(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20021(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.