Medium severity · published Sep 27, 2021
CVE-2021-20035
SonicWall SMA100 Appliances OS Command Injection Vulnerability
In wildKEV
6.5
CVSS
4.4%
EPSS
Yes
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)4.4% · higher than 91% of CVEs
Exploited in the wildYes
CISA KEVListed Apr 16, 2025
Federal remediation dueMay 7, 2025
Ransomware campaign useNot known
Affected products
Which versions
SM
SMA · SonicWall
9.0.0.10-28sv and earlier; 10.2.0.7-34sv and earlier; 10.2.1.0-17sv and earlier · source: vendor
S2
Sma 200 Firmware · Sonicwall
before 9.0.0.11-31sv; 10.2.0.0 before 10.2.0.8-37sv; 10.2.1.0 before 10.2.1.1-19sv · source: NVD
S2
Sma 210 Firmware · Sonicwall
before 9.0.0.11-31sv; 10.2.0.0 before 10.2.0.8-37sv; 10.2.1.0 before 10.2.1.1-19sv · source: NVD
S4
Sma 400 Firmware · Sonicwall
before 9.0.0.11-31sv; 10.2.0.0 before 10.2.0.8-37sv; 10.2.1.0 before 10.2.1.1-19sv · source: NVD
S4
Sma 410 Firmware · Sonicwall
before 9.0.0.11-31sv; 10.2.0.0 before 10.2.0.8-37sv; 10.2.1.0 before 10.2.1.1-19sv · source: NVD
S5
Sma 500v · Sonicwall
before 9.0.0.11-31sv; 10.2.0.0 before 10.2.0.8-37sv; 10.2.1.0 before 10.2.1.1-19sv · source: NVD
SA
SMA100 Appliances · SonicWall
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-20035
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-20035
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_CONFIRM
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0022
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SonicWall SMA100 Appliances OS Command Injection Vulnerability