Is CVE-2021-20028 actively exploited?

CVE-2021-20028 has no public evidence of in-the-wild exploitation as of 2025-10-31.

What is the CVSS score for CVE-2021-20028?

CVE-2021-20028 has a CVSS score of 9.8 (CRITICAL severity). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

How do I patch CVE-2021-20028?

Patch guidance is available from sonicwall security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2021-20028.

Fix CVE-2021-20028 - CRITICAL sonicwall sma 210 firmware

Q: Which products are affected by CVE-2021-20028?

6 products: sonicwall sma 210 firmware, sonicwall sma 410 firmware, sonicwall sma 500v firmware, sonicwall sra 4600 firmware, sonicwall sra 1600 firmware, and 1 more.

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 Metrics

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector: network
Complexity: low
Privileges: none
User Action: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-89 · SQL Injection CWE-89 · SQL Injection

Metadata

Primary Vendor: SONICWALL
Published: 8/4/2021
Last Modified: 10/31/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

sonicwall : sma_210_firmwaresonicwall : sma_410_firmwaresonicwall : sma_500v_firmwaresonicwall : sra_4600_firmwaresonicwall : sra_1600_firmwaresonicwall : sra_va_firmware

Remediation Guidance

Executive Summary

View on NIST NVD