CVE-2021-20028

CriticalCVSS 9.8/10Known exploited (CISA KEV)Last modified Jun 17, 2026

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

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-89

Affected software

Vendor	Product	Versions
SonicWall	SonicWall SRA/SMA100	8.x firmware; 9.0.0.9-26sv and earlier.

References

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

Timeline

Published: Aug 4, 2021
Last modified: Jun 17, 2026
Added to CISA KEV: Mar 28, 2022
NVD status: Analyzed

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