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CVE-2021-20028

CRITICAL9.8
CISA KEV

Published 2021-08-04 · Updated 2026-06-17 · Source PSIRT@sonicwall.com

Summary

CVE-2021-20028 is a critical-severity (CVSS 9.8) vulnerability in SonicWall Secure Remote Access (SRA). CISA added it to the Known Exploited Vulnerabilities catalog on March 28, 2022, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by April 18, 2022. CISA also lists it as known to be used in ransomware campaigns, so it should be prioritised accordingly. SonicWall has 19 vulnerabilities in the KEV catalog, 13 of them linked to ransomware.

All 19 known-exploited SonicWall vulnerabilities →

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

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

CWE-89CWE-89

CISA Known-Exploited Vulnerability

Product: SonicWall — Secure Remote Access (SRA)

Name: SonicWall Secure Remote Access (SRA) SQL Injection Vulnerability

Date added: 2022-03-28 · Due: 2022-04-18

USED IN RANSOMWARE

Required action: The impacted product is end-of-life and should be disconnected if still in use.

View on NVD