Email Security and management
CVE-2021-20020: Command execution in Global Management System (GMS)
A command execution vulnerability in SonicWall GMS 9.3 allows a remote unauthenticated attacker to locally escalate privilege to root.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityUnknown
EPSS3.7%Chance of exploitation in 30 days
Public exploitNot tracked
FixSee advisory
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Global Management System (GMS) 9.3 and earlier | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
A command execution vulnerability in SonicWall GMS 9.3 allows a remote unauthenticated attacker to locally escalate privilege to root.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.