CVE WatchAug 12, 2026

CVE-2021-20016

SonicWall SSLVPN SMA100 SQL Injection Vulnerability

CVSS

9.8

Critical

EPSS

40.0%

p99

KEV

YES

Nov 3, 2021

Exploit Today

0-100

Published: Feb 4, 2021 · Last modified: Aug 12, 2026 · CWE-89

EPSS · 30d

37.0%EPSS · 30 days40.0%

2026-08-032026-08-31

KEV catalog record

Product

SonicWall / SSLVPN SMA100

Vulnerability

SonicWall SSLVPN SMA100 SQL Injection Vulnerability

Added to KEV

Nov 3, 2021

Remediate by

Nov 17, 2021

Known ransomware use

Yes

Summary description

SonicWall SSLVPN SMA100 contains a SQL injection vulnerability that allows remote exploitation for credential access by an unauthenticated attacker.

Required action

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2021-20016

Technical description

A SQL-Injection vulnerability in the SonicWall SSLVPN SMA100 product allows a remote unauthenticated attacker to perform SQL query to access username password and other session related information. This vulnerability impacts SMA100 build version 10.x.

Official references

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