What’s Vulnerable › Vulnerabilities

CVE-2020-21992

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 5.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-04-29 · updated 2026-06-17
• Weakness: CWE-78

Description

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: through 6.0
• Inim Smartliving 10100Lg3 Firmware: through 6.0
• Inim Smartliving 1050 Firmware: through 6.0
• Inim Smartliving 1050G3 Firmware: through 6.0
• Inim Smartliving 505 Firmware: through 6.0
• Inim Smartliving 515 Firmware: through 6.0

References

• https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5544.php
• https://www.zeroscience.mk/en/vulnerabilities/ZSL-2019-5544.php

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