OS Command Injection in SMA 100 - CVE-2021-20035
Published: September 24, 2021 / Updated: April 16, 2025
Vulnerability identifier: #VU56851
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-20035
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerability details
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation in the SMA100 management interface. A remote user can send a specially crafted request to the application and execute arbitrary OS commands on the target system as a 'nobody' user.
Successful exploitation of the vulnerability may lead to denial of service.
Affected software
SMA 100
How to mitigate CVE-2021-20035
Install updates from vendor's website.
SMA 100 - addressed in versions 9.0.0.11-31sv, 10.2.0.8-37sv, 10.2.1.1-19sv