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CVE-2021-20028

Known Exploited (CISA KEV)CRITICAL

9.8

CVSS Severity Score

EPSS Score50.1100%

EPSS Percentile97.70th

PublishedAug 4, 2021

Last ModifiedOct 31, 2025

Vulnerability 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 Platforms (CPE)

💻

Sonicwall

Sma 210 Firmware

>= 8.0.0.0 and < 9.0.0.10-28sv

💻

Sonicwall

Sma 410 Firmware

>= 8.0.0.0 and < 9.0.0.10-28sv

💻

Sonicwall

Sma 500v Firmware

>= 8.0.0.0 and < 9.0.0.10-28sv

💻

Sonicwall

Sra 4600 Firmware

>= 8.0.0.0 and < 9.0.0.10-28sv

💻

Sonicwall

Sra 1600 Firmware

>= 8.0.0.0 and < 9.0.0.10-28sv

💻

Sonicwall

Sra Va Firmware

>= 8.0.0.0 and < 9.0.0.10-28sv

References & Advisories

🔗 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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