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CVE-2020-21992

28
FAUCET Score

CVE-2020-21992 is an authenticated remote command injection vulnerability affecting Inim Electronics SmartLiving SmartLAN/G/SI devices running firmware versions 6.x and earlier. An attacker can exploit a lack of sanitization in the 'par' POST parameter within the web.cgi binary, specifically when using the 'testemail' module, to inject and execute arbitrary OS commands with root privileges. This vulnerability carries a high CVSS score of 8.8, indicating a low-complexity attack that can lead to complete compromise of confidentiality, integrity, and availability. Despite its severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 6.0CPE matchmatch criteria
cpe:2.3:o:inim:smartliving_505_firmware:*:*:*:*:*:*:*:*
<= 6.0CPE matchmatch criteria
cpe:2.3:o:inim:smartliving_515_firmware:*:*:*:*:*:*:*:*
<= 6.0CPE matchmatch criteria
cpe:2.3:o:inim:smartliving_1050_firmware:*:*:*:*:*:*:*:*
<= 6.0CPE matchmatch criteria
cpe:2.3:o:inim:smartliving_1050g3_firmware:*:*:*:*:*:*:*:*
<= 6.0CPE matchmatch criteria
cpe:2.3:o:inim:smartliving_10100l_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
5.21%
Probability of exploitation in next 30 days
EPSS Percentile
91.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0521 is in the 91st percentile among its peer group of 17,823 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

zeroscience.mk / en/vulnerabilities/ZSL-2019-5544.php
ExploitThird Party Advisory