CVE-2021-20991
HIGHCVSS 8.8/10EPSS 5.44%
Last modified
CVE-2021-20991 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 5.44% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fibaro | Home Center 2 Firmware | <= 4.540 |
| Fibaro | Home Center Lite Firmware | <= 4.540 |
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
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-20991?
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.
How severe is CVE-2021-20991?
CVE-2021-20991 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 5.44% probability of exploitation in the next 30 days.
How do I fix CVE-2021-20991?
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.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2021-20991?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST