9.8
CRITICAL
CVE-2021-20991
Fibaro Home Center Command Injection Vulnerability
Description

In Fibaro Home Center 2 and Lite devices with firmware version 4.540 and older an authenticated user can run commands as root user using a command injection vulnerability.

INFO

Published Date :

April 19, 2021, 2:15 p.m.

Last Modified :

April 26, 2022, 4:03 p.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2021-20991 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Fibaro home_center_2_firmware
2 Fibaro home_center_lite_firmware
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-20991.

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

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-20991 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-20991 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Apr. 26, 2022

    Action Type Old Value New Value
    Removed CWE NIST CWE-78
    Added CWE NIST CWE-77
  • Initial Analysis by [email protected]

    Apr. 23, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:S/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type http://packetstormsecurity.com/files/162243/Fibaro-Home-Center-MITM-Missing-Authentication-Code-Execution.html No Types Assigned http://packetstormsecurity.com/files/162243/Fibaro-Home-Center-MITM-Missing-Authentication-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
    Changed Reference Type http://seclists.org/fulldisclosure/2021/Apr/27 No Types Assigned http://seclists.org/fulldisclosure/2021/Apr/27 Mailing List, Third Party Advisory
    Changed Reference Type https://www.iot-inspector.com/blog/advisory-fibaro-home-center/ No Types Assigned https://www.iot-inspector.com/blog/advisory-fibaro-home-center/ Exploit, Third Party Advisory
    Added CWE NIST CWE-78
    Added CPE Configuration AND OR *cpe:2.3:o:fibaro:home_center_2_firmware:*:*:*:*:*:*:*:* versions up to (including) 4.540 OR cpe:2.3:h:fibaro:home_center_2:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:fibaro:home_center_lite_firmware:*:*:*:*:*:*:*:* versions up to (including) 4.540 OR cpe:2.3:h:fibaro:home_center_lite:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Apr. 20, 2021

    Action Type Old Value New Value
    Added Reference http://packetstormsecurity.com/files/162243/Fibaro-Home-Center-MITM-Missing-Authentication-Code-Execution.html [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 20, 2021

    Action Type Old Value New Value
    Added Reference http://seclists.org/fulldisclosure/2021/Apr/27 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-20991 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

3.89 }} 0.23%

score

0.92130

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability