SonicWall SMA100 Appliances OS Command Injection Vulnerability (CVE-2021-20035)
Severity: medium · Patch status: unknown · Since 2025-04-16 · CVE-2021-20035
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. CISA added CVE-2021-20035 to its Known Exploited Vulnerabilities catalog on Apr 16, 2025, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by May 7, 2025 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch
