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Vulnerability record · CVE-2021-20989 · published 19 April 2021

CVE-2021-20989: Fibaro home center 2 firmware improper certificate validation vulnerability

Fibaro · Home Center 2 Firmware

Fibaro Home Center 2 and Lite devices with firmware version 4.600 and older initiate SSH connections to the Fibaro cloud to provide remote access and remote support capabilities. This connection can be intercepted using DNS spoofing attack and a device initiated remote port-forward channel can be used to connect to the web management interface. Knowledge of authorization credentials to the management interface is required to perform any further actions.

5.9 CVSS 3.1 Medium EPSS 2.0% · top 20.2% CWE-295 · Improper certificate validation
5.9CVSS 3.1 base score, v2 4.3
2.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References, 4 tagged exploit
17 Jun 2026Last modified by NVD

Description

Fibaro Home Center 2 and Lite devices with firmware version 4.600 and older initiate SSH connections to the Fibaro cloud to provide remote access and remote support capabilities. This connection can be intercepted using DNS spoofing attack and a device initiated remote port-forward channel can be used to connect to the web management interface. Knowledge of authorization credentials to the management interface is required to perform any further actions.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/162243/Fibaro-Home-Center-MITM-Missing-Authentication-Code-Execution.html ExploitThird Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2021/Apr/27 Mailing ListThird Party Advisory
https://www.iot-inspector.com/blog/advisory-fibaro-home-center/ ExploitThird Party Advisory
http://packetstormsecurity.com/files/162243/Fibaro-Home-Center-MITM-Missing-Authentication-Code-Execution.html ExploitThird Party AdvisoryVDB Entry
http://seclists.org/fulldisclosure/2021/Apr/27 Mailing ListThird Party Advisory
https://www.iot-inspector.com/blog/advisory-fibaro-home-center/ ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2021-20989), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.