RCE in Sonicwall Sma100
CVE-2021-20035
Improper neutralization of special elements in the SMA100 management interface allows a remote authenticated attacker to inject arbitrary commands as a 'nobody' user which potentially leads to DoS.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.128 (94.2th percentile) — read the EPSS interpretation.
Affected products
- Sonicwall Sma100 — versions 9.0.0.10-28sv and earlier, 10.2.0.7-34sv and earlier, 10.2.1.0-17sv and earlier
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
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.
Public proof-of-concept exploits
References
- psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0022 (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2021-20035?
- CVE-2021-20035 is a vulnerability in Sonicwall Sma100, classified under OS Command Injection. Published 2021-09-27.
- Is CVE-2021-20035 known to be exploited?
- Yes. CVE-2021-20035 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2025-04-16), indicating it is being actively exploited. 4 public proof-of-concept repositories are indexed.