Email Security Appliance 9000 Firmware
by Sonicwall
Immediate action recommended
Email Security Appliance 9000 Firmware has critical exploitation rates across its known vulnerabilities.
What to do
- Check for patches and apply immediately
- Review whether this software can be replaced with a safer alternative
- Consult your IT provider about mitigation options
What Attackers Target
Vulnerabilities with high exploit probability
60.0%
Confirmed actively exploited (CISA)
60.0%
Public exploit code available
0.0%
Based on 5 known vulnerabilities. Percentages show the proportion that are actively dangerous — a low percentage means most vulnerabilities in this product are not being exploited.
Most Dangerous Vulnerabilities
| CVE | CVSS | Exploit Probability | Confirmed |
|---|---|---|---|
| CVE-2021-20021 | 9.8 | 91.7% | Yes |
| CVE-2021-20023 | 4.9 | 42.7% | Yes |
| CVE-2021-20022 | 7.2 | 20.0% | Yes |
| CVE-2025-40605 | 5.3 | 0.1% | — |
| CVE-2025-40604 | 9.8 | 0.0% | — |
81
/ 100
critical-risk
Active Threat
46/50 · Critical
Exploit Availability
35/50 · High
Score uses Wilson score intervals to account for sample size. Products with few CVEs are scored conservatively.