CVE-2020-21995 is a critical-severity flaw (CVSS 9.8) 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 uses default hardcoded credentials. An attacker could exploit this to gain Telnet, SSH and FTP access to the system.
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-2020-21995?
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-2020-21995 being exploited?
CVE-2020-21995 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-2020-21995 affect?
CVE-2020-21995 affects smartliving 505 firmware, smartliving 515 firmware, smartliving 1050 firmware. Severity is critical (CVSS 9.8). Inim Electronics Smartliving SmartLAN/G/SI <=6.x uses default hardcoded credentials. An attacker could exploit this to gain Telnet, SSH and FTP access to the system.
How urgent is CVE-2020-21995?
Priority 60/100. Critical severity; Remotely exploitable, no login, no user action
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