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.
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. This vulnerability is known to be actively exploited by threat actors. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
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
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Affected Versions
SonicWall Email Security Version 10.0.9 and earlier is affected by CVE-2021-20022Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.