November 3, 2021 · Applied Cybernetics Group
CVE-2021-20016 — SonicWall SSLVPN SMA100
known ransomware use
SonicWall SSLVPN SMA100 SQL Injection Vulnerability
- Added to KEV
2021-11-03- Federal due date
2021-11-17- Vendor
- SonicWall
- Product
- SSLVPN SMA100
- EPSS
- 98.6th percentile (score 0.400, as of
2026-09-16) - NVD CVSS v3.1
- 9.8 (CRITICAL)
- Ransomware use
- Known
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-20016
CISA short 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.
NVD 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.