Overview
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.
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0022 ; https://nvd.nist.gov/vuln/detail/CVE-2021-20035
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2021-20035 |
| Vendor / Product | SonicWall — SMA100 Appliances |
| NVD Published | 2021-09-27 |
| NVD Last Modified | 2025-10-31 |
| CVSS 3.1 Score | 6.5 |
| CVSS 3.1 Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| Severity | MEDIUM |
| CWE | CWE-78 |
| CISA KEV Added | 2025-04-16 |
| CISA KEV Deadline | 2025-05-07 |
| Known Ransomware Use | No |
CVSS 3.1 Breakdown
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Required Action
CISA BOD 22-01 Deadline: 2025-05-07.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Timeline
| Date | Event |
|---|---|
| 2025-04-16 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2025-05-07 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2021-20035 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |