CVE-2021-20028Improper 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…
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It affects SonicWall SRA/SMA100 and 6 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Mar 28, 2022; federal agencies had to remediate by Apr 18, 2022, and it is known to be used in ransomware. Treat that date as your deadline.
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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
- 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-89
- Known exploited
- Added to CISA KEV Mar 28, 2022; federal remediation due Apr 18, 2022; known ransomware useThe impacted product is end-of-life and should be disconnected if still in use.
- EPSS (exploitation in the next 30 days)
- 30.08% (percentile 98)
- Assigned by
- sonicwall
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
SonicWall SonicWall SRA/SMA100 sonicwall:sra_sma100 (from the name) | 8.x firmware; 9.0.0.9-26sv and earlier. | CNA record |
sonicwall sma_210_firmware sonicwall:sma_210_firmware | from 8.0.0.0 before 9.0.0.10-28sv | NVD |
sonicwall sma_410_firmware sonicwall:sma_410_firmware | from 8.0.0.0 before 9.0.0.10-28sv | NVD |
sonicwall sma_500v_firmware sonicwall:sma_500v_firmware | from 8.0.0.0 before 9.0.0.10-28sv | NVD |
sonicwall sra_4600_firmware sonicwall:sra_4600_firmware | from 8.0.0.0 before 9.0.0.10-28sv | NVD |
sonicwall sra_1600_firmware sonicwall:sra_1600_firmware | from 8.0.0.0 before 9.0.0.10-28sv | NVD |
sonicwall sra_va_firmware sonicwall:sra_va_firmware | from 8.0.0.0 before 9.0.0.10-28sv | NVD |
References
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0017x-refsource-confirm, vendor-advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-20028us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.