SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2020-21992

Inim Electronics SmartLiving SmartLAN/G/SI <=6.x suffers from an authenticated remote command injection vulnerability.

HIGH 8.8EPSS 5.21%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (5.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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.

CVSS 3.1
8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
5.21% probability · 92th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Weakness
CWE-78
Affected
inim/smartliving 505 firmware · inim/smartliving 515 firmware · inim/smartliving 1050 firmware · inim/smartliving 1050g3 firmware · inim/smartliving 10100l firmware · inim/smartliving 10100lg3 firmware
Source
cve@mitre.org
EPSS trend
0%5%10%26 October 2026: 5.21%26 October 202626 October 2026

EPSS 5.2% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.