April 16, 2025 · Applied Cybernetics Group
CVE-2021-20035 — SonicWall SMA100 Appliances
SonicWall SMA100 Appliances OS Command Injection Vulnerability
- Added to KEV
2025-04-16- Federal due date
2025-05-07- Vendor
- SonicWall
- Product
- SMA100 Appliances
- EPSS
- 89.0th percentile (score 0.039, as of
2026-07-13) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- ATT&CK
- T1059 , T1078 · signal rollup
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-20035
CISA short description
SonicWall SMA100 appliances contain an OS command injection vulnerability in the management interface that allows a remote authenticated attacker to inject arbitrary commands as a 'nobody' user, which could potentially lead to code execution.
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.