AUGUST 4, 2026
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Case File

CVE-2020-21992

HIGH · CVSS 8.8 EPSS 5.21%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-04-29 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.8. It may be remotely exploitable.

CVE
CVE-2020-21992
Severity
HIGH
CVSS
8.8
EPSS
5.21%

Original NVD 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.

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