CVE-2021-20990

7.5 HIGH 4% exploit odds No fix listed

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of service disruption.
Exploit odds: 3.6% chance of exploitation in the next 30 days (EPSS).
Fix: No patch or advisory is linked yet. Look at mitigations or restrict exposure.

Timeline

2020-12-17 00:00 UTC ReservedThe CVE id was reserved by its CNA
2021-04-19 14:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 03:34 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 3.6% in the next 30 days (EPSS).
Severity: 7.5 HIGH (CVSS).
Fix: none linked yet, which raises it.

Details

Published: 2021-04-19 14:15 UTC
Last modified: 2026-06-17 03:34 UTC
Exploit probability: 3.6% · EPSS, next 30 days
Weakness: CWE-306 · Missing authentication
Record status: Modified

Affected

Fibaro Home Center 2 Firmware ≤ 4.600
Fibaro Home Center Lite Firmware ≤ 4.600

Attack profile CVSS 3.1 · 7.5

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: High

Raw vector

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

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2021-20990.md and follow it. Check whether this project is affected by CVE-2021-20990. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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References

NVD record · CVE.org record