CVE-2021-20022 vulnerability in SonicWall Products
Published on April 9, 2021

SonicWall Email Security version 10.0.9.x contains a vulnerability that allows a post-authenticated attacker to upload an arbitrary file to the remote host.

Vendor Advisory NVD

Known Exploited Vulnerability

This SonicWall Email Security Privilege Escalation Exploit Chain vulnerability is part of CISA's list of Known Exploited Vulnerabilities. SonicWall Email Security version 10.0.9.x contains a vulnerability that allows a post-authenticated attacker to upload an arbitrary file to the remote host.

The following remediation steps are recommended / required by November 17, 2021: Apply updates per vendor instructions.

Vulnerability Analysis

CVE-2021-20022 is exploitable with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. It has an exploitability score of 1.2 out of four. The potential impact of an exploit of this vulnerability is considered to be very high.

What is an Unrestricted File Upload Vulnerability?

The software allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment.

CVE-2021-20022 has been classified to as an Unrestricted File Upload vulnerability or weakness.

Products Associated with CVE-2021-20022

You can be notified by stack.watch whenever vulnerabilities like CVE-2021-20022 are published in these products:

SonicWall Email Security

SonicWall Hosted Email Security

What versions are vulnerable to CVE-2021-20022?