SonicWall SSLVPN SMA100
YES - ON THE CISA KEV LIST
CVE-2021-20016
SonicWall SSLVPN SMA100 SQL Injection Vulnerability
overdue since 2021-11-17
SonicWall: 20 entries (1.1% of all KEV entries are from this vendor); 5 added in 2026.
BOD 26-04 note: this is the date printed in the CISA catalog. A federal agency's actual deadline is set by its SSVC tier - Act (3 days), Attend (14 days), Track (60 days), or the next scheduled upgrade - counted from the KEV listing date or the date the vulnerability is identified in its environment, whichever comes first. Use the tier helper on each CVE page for your own window.
Your BOD 26-04 window (SSVC tier helper)
Your remediation window ends:
Description
SonicWall SSLVPN SMA100 contains a SQL injection vulnerability that allows remote exploitation for credential access by an unauthenticated attacker.
Required action (CISA)
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-20016
References
Other KEV entries for this vendor: SonicWall
- CVE-2026-19868 - SonicOS SSLVPN (2026-11-06)
- CVE-2026-83548 - SMA1000 Appliances (2026-09-02)
- CVE-2026-83549 - SMA1000 Appliances (2026-09-02)
- CVE-2026-15409 - SMA1000 Appliances (2026-07-14)
- CVE-2026-15410 - SMA1000 Appliances (2026-07-14)
- CVE-2025-40602 - SMA1000 appliance (2025-12-17)
- CVE-2023-44221 - SMA100 Appliances (2025-05-01)
- CVE-2021-20035 - SMA100 Appliances (2025-04-16)
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