What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: yes — in CISA KEV since 2022-03-28
• EPSS: 30.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-04 · updated 2026-06-17
• Weakness: CWE-89

Description

Improper neutralization of a SQL Command leading to SQL Injection vulnerability impacting end-of-life Secure Remote Access (SRA) products, specifically the SRA appliances running all 8.x firmware and 9.0.0.9-26sv or earlier

Affected products

• SonicWall Sma 210 Firmware: from 8.0.0.0 before 9.0.0.10-28sv — fixed in 9.0.0.10-28sv
• SonicWall Sma 410 Firmware: from 8.0.0.0 before 9.0.0.10-28sv — fixed in 9.0.0.10-28sv
• SonicWall Sma 500V Firmware: from 8.0.0.0 before 9.0.0.10-28sv — fixed in 9.0.0.10-28sv
• SonicWall Sra 1600 Firmware: from 8.0.0.0 before 9.0.0.10-28sv — fixed in 9.0.0.10-28sv
• SonicWall Sra 4600 Firmware: from 8.0.0.0 before 9.0.0.10-28sv — fixed in 9.0.0.10-28sv
• SonicWall Sra Va Firmware: from 8.0.0.0 before 9.0.0.10-28sv — fixed in 9.0.0.10-28sv

How to fix

Upgrade to a fixed version: SonicWall Sma 210 Firmware 9.0.0.10-28sv; SonicWall Sma 410 Firmware 9.0.0.10-28sv; SonicWall Sma 500V Firmware 9.0.0.10-28sv; SonicWall Sra 1600 Firmware 9.0.0.10-28sv; SonicWall Sra 4600 Firmware 9.0.0.10-28sv; SonicWall Sra Va Firmware 9.0.0.10-28sv. Check the vendor advisory for mitigations.

References

• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0017
• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0017
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20028

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