SonicWall · SSLVPN SMA100
CVE-2021-20016
SonicWall SSLVPN SMA100 SQL Injection Vulnerability
What it is
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.
CISA: SonicWall SSLVPN SMA100 contains a SQL injection vulnerability that allows remote exploitation for credential access by an unauthenticated attacker.
What to do
Apply updates per vendor instructions.
Deadline for US federal agencies: November 17, 2021
- Added to the CISA list
- November 3, 2021
- Published
- February 3, 2021
- Severity
- Critical 9.8 CVSS 3.1
- Chance of attacks in the next 30 days (EPSS)
- 40% in the top 1.4% of all known vulnerabilities
- Weakness
- CWE-89
- More details
- NVD · CVE.org · CISA
All references (1)
More exploited flaws from SonicWall
| Added | Vulnerability | Product | Severity | Attack chance |
|---|---|---|---|---|
| Sep 2, 2026 | Server-Side Request Forgery | SMA1000 Appliances | Critical 10.0 | 8.0% |
| Sep 2, 2026 | OS Command Injection | SMA1000 Appliances | High 7.8 | 9.9% |
| Jul 14, 2026 | Server-Side Request Forgery | SMA1000 Appliances | Critical 10.0 | 6.8% |
| Jul 14, 2026 | Code Injection | SMA1000 Appliances | High 7.2 | 12% |
| Dec 17, 2025 | SMA1000 Missing Authorization | SMA1000 appliance | Medium 6.6 | 2.8% |
| May 1, 2025 | OS Command Injection | SMA100 Appliances | High 7.2 | 76% |
| Apr 16, 2025 | OS Command Injection | SMA100 Appliances | Medium 6.5 | 4.4% |
| Feb 18, 2025 | SSLVPN Improper Authentication | SonicOS | High 8.2 | 95% |
Sources: Known Exploited Vulnerabilities (CISA, public domain), CVE records (cve.org) and EPSS (FIRST). The chance of attacks is the EPSS estimate that someone will try to exploit the flaw in the next 30 days.