CVE-2020-21992: Inim Electronics SmartLiving SmartLAN/G/SI <=6.x suffers from an authenticated remote command injection vulner
59
This month
HIGH 8.8UPGRADEUPGRADEUPGRADE
CVE-2020-21992 is a high-severity flaw (CVSS 8.8) affecting smartliving 505 firmware, smartliving 515 firmware, smartliving 1050 firmware. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 paramet
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
Published CVE record published
Updated Record last modified
inim smartliving 505 firmware UPGRADE
Affected: <= 6.0
Fixed in: newer than 6.0
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
inim smartliving 515 firmware UPGRADE
Affected: <= 6.0
Fixed in: newer than 6.0
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
inim smartliving 1050 firmware UPGRADE
Affected: <= 6.0
Fixed in: newer than 6.0
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
inim smartliving 1050g3 firmware UPGRADE
Affected: <= 6.0
Fixed in: newer than 6.0
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
inim smartliving 10100l firmware UPGRADE
Affected: <= 6.0
Fixed in: newer than 6.0
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
inim smartliving 10100lg3 firmware UPGRADE
Affected: <= 6.0
Fixed in: newer than 6.0
Safe to downgrade to: no unaffected older release
Check your OS release
cat /etc/os-release; uname -r
Debian / Ubuntu
sudo apt update && sudo apt full-upgrade
RHEL / Amazon Linux / Fedora
sudo dnf upgrade --refresh
Windows
Install the latest cumulative update from Windows Update
If no patch exists yet
OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.
Verify at the official sourceNVD · CVE Program · Report a problem with this page Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2020-21992?
smartliving 505 firmware: upgrade to newer than 6.0; smartliving 515 firmware: upgrade to newer than 6.0; smartliving 1050 firmware: upgrade to newer than 6.0. Exact commands for each OS are on this page.
Is CVE-2020-21992 being exploited?
CVE-2020-21992 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2020-21992 affect?
CVE-2020-21992 affects smartliving 505 firmware, smartliving 515 firmware, smartliving 1050 firmware. Severity is high (CVSS 8.8). 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.c
How urgent is CVE-2020-21992?
Priority 59/100. High severity; EPSS top 8%: very likely to be exploited; Public exploit reference
Related CVEs
CVE-2020-22002HIGH 7.5MITIGATEMITIGATE An Unauthenticated Server-Side Request Forgery (SSRF) vulnerability exists in Inim Electronics Smartliving Sma
PatchTheCVE