CVE-2020-21992: Inim Smartliving 10100l Firmware

High severity, CVSS 8.8. EPSS: 5.2% chance of exploitation in the next 30 days.

Inim Electronics SmartLiving SmartLAN/G/SI <=6.x suffers from an authenticated remote command injection vulnerability. The issue exist due to the 'par' POST parameter not being sanitized when called with the 'testemail' module through web.cgi binary. The vulnerable CGI binary (ELF 32-bit LSB executable, ARM) is calling the 'sh' executable via the system() function to issue a command using the mailx service and its vulnerable string format parameter allowing for OS command injection with root privileges. An attacker can remotely execute system commands as the root user using default credentials and bypass access controls in place.

Affected products

• Inim Smartliving 10100l Firmware: up to and including 6.0
• Inim Smartliving 10100lg3 Firmware: up to and including 6.0
• Inim Smartliving 1050 Firmware: up to and including 6.0
• Inim Smartliving 1050g3 Firmware: up to and including 6.0
• Inim Smartliving 505 Firmware: up to and including 6.0
• Inim Smartliving 515 Firmware: up to and including 6.0

Published 2021-04-29. Last modified 2026-06-17.