CVE-2021-20990

Name: CVE-2021-20990
Creator: NVD / NIST
Published: 2021-04-19T14:15:11.71+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 3.43%

Last modified Jun 17, 2026

CVE-2021-20990 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In Fibaro Home Center 2 and Lite devices with firmware version 4.600 and older an internal management service is accessible on port 8000 and some API endpoints could be accessed without authentication to trigger a shutdown, a reboot or a reboot into recovery mode.. EPSS estimates a 3.43% chance of exploitation in the next 30 days.

Description

In Fibaro Home Center 2 and Lite devices with firmware version 4.600 and older an internal management service is accessible on port 8000 and some API endpoints could be accessed without authentication to trigger a shutdown, a reboot or a reboot into recovery mode.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

3.43%

87.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Fibaro	Home Center 2 Firmware	<= 4.600
Fibaro	Home Center Lite Firmware	<= 4.600

References

http://packetstormsecurity.com/files/162243/Fibaro-Home-Center-MITM-Missing-Authentication-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2021/Apr/27Mailing List, Third Party Advisory
https://www.iot-inspector.com/blog/advisory-fibaro-home-center/Exploit, Third Party Advisory
http://packetstormsecurity.com/files/162243/Fibaro-Home-Center-MITM-Missing-Authentication-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2021/Apr/27Mailing List, Third Party Advisory
https://www.iot-inspector.com/blog/advisory-fibaro-home-center/Exploit, Third Party Advisory

Timeline

Published: Apr 19, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20990?

How severe is CVE-2021-20990?

CVE-2021-20990 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.43% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20990?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-20990?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST