# CVE-2021-20028: SonicWall Secure Remote Access (SRA) SQL Injection Vulnerability

Source: https://junglewise.ai/threats/cve-2021-20028-sonicwall-secure-remote-access-sra-sql-injection-vulnerability  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2022-03-28. Updated: 2026-05-10  
License: CC BY 4.0 with a link back

CVE-2021-20028 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2022-03-28

SonicWall Secure Remote Access (SRA) and SMA products contain an improper neutralization of SQL commands, leading to a critical SQL injection vulnerability. The flaw impacts end-of-life SRA appliances running 8.x or early 9.x firmware, potentially allowing unauthenticated remote attackers to execute arbitrary SQL queries.

Vendors: [SonicWall](https://junglewise.ai/threats/vendors/sonicwall).

## Quick answers

**Is CVE-2021-20028 exploited in the wild?** Yes. CVE-2021-20028 is known to be exploited in the wild, first recorded on 28 March 2022. Treat it as urgent.

**How severe is CVE-2021-20028?** Critical severity, with a CVSS score of 9.8, published 28 March 2022.

**Which products and versions are affected?** SonicWall Secure Remote Access (SRA) firmware 8.x, 9.0.0.9-26sv or earlier; SonicWall SMA 210 firmware 8.0.0.0 to 9.0.0.10-28sv; SonicWall SMA 410 firmware 8.0.0.0 to 9.0.0.10-28sv; SonicWall SMA 500v firmware 8.0.0.0 to 9.0.0.10-28sv.

**Is there a fix for CVE-2021-20028?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2021-20028 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2021-20028?** Check whether you run SonicWall Secure Remote Access (SRA). Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Affected products

- SonicWall Secure Remote Access (SRA) firmware 8.x, 9.0.0.9-26sv or earlier
- SonicWall SMA 210 firmware 8.0.0.0 to 9.0.0.10-28sv
- SonicWall SMA 410 firmware 8.0.0.0 to 9.0.0.10-28sv
- SonicWall SMA 500v firmware 8.0.0.0 to 9.0.0.10-28sv

## Timeline

- 2021-02-01: disclosed: SonicWall PSIRT Advisory SNWLID-2021-0017 published
- 2022-03-28: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
- 2022-03-28: advisory: NVD publication date