CVE-2021-20021

CriticalCVSS 9.8/10Known exploited (CISA KEV)Last modified Aug 12, 2026

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-269

Affected software

No affected versions have been published.

Timeline

Published: Apr 9, 2021
Last modified: Aug 12, 2026
Added to CISA KEV: Nov 3, 2021
NVD status: Analyzed

Related CVEs from 2021

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