Secure Mobile Access (SMA)
CVE-2021-20042: An unauthenticated remote attacker can use SMA 100 as an unintended proxy or intermediary undetectable prox…
An unauthenticated remote attacker can use SMA 100 as an unintended proxy or intermediary undetectable proxy to bypass firewall rules.
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 |
|---|---|
| SonicWall SMA100 9.0 | See the advisory |
| SonicWall SMA100 10.2 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
An unauthenticated remote attacker can use SMA 100 as an unintended proxy or intermediary undetectable proxy to bypass firewall rules. This vulnerability affected SMA 200, 210, 400, 410 and 500v appliances.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.