Command Injection in SonicWall GMS - CVE-2021-20020
Published: April 12, 2021
Vulnerability identifier: #VU52037
CSH Severity: High
CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-20020
CWE-ID: CWE-77
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary commands on the target system.
The vulnerability exists due to improper input validation. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary commands on the target system, leading to privilege escalation.
Affected software
SonicWall GMS
How to mitigate CVE-2021-20020
Install updates from vendor's website.
SonicWall GMS - update to 9.3 Hotfix MAR-22474.1