CVE-2018-11681

Name: CVE-2018-11681
Creator: NVD / NIST
Published: 2018-06-02T13:29:00.277+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 4.30%

Last modified Jun 17, 2026

CVE-2018-11681 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. Default and unremovable support credentials (user:nwk password:nwk2) allow attackers to gain total super user control of an IoT device through a TELNET session to products using the RadioRA 2 Lutron integration protocol Revision M to Revision Y. NOTE: The vendor disputes this id as not being a vulnerability because what can be done through the ports revolve around controlling lighting, not code execution. EPSS estimates a 4.30% chance of exploitation in the next 30 days.

Description

Default and unremovable support credentials (user:nwk password:nwk2) allow attackers to gain total super user control of an IoT device through a TELNET session to products using the RadioRA 2 Lutron integration protocol Revision M to Revision Y. NOTE: The vendor disputes this id as not being a vulnerability because what can be done through the ports revolve around controlling lighting, not code execution. A certain set of commands are listed, which bear some similarity to code, but they are not arbitrary and do not allow admin-level control of a machine

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

4.30%

89.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Lutron	Stanza Firmware	All versions
Lutron	Radiora 2 Firmware	All versions
Lutron	Homeworks Qs Firmware	All versions

References

http://sadfud.me/explotos/CVE-2018-11629Third Party Advisory
http://www.lutron.com/TechnicalDocumentLibrary/040249.pdf
https://reversecodes.wordpress.com/2018/06/02/0-day-tomando-el-control-de-las-instalaciones-de-la-nasa-en-cabo-canaveral/Mitigation, Third Party Advisory
http://sadfud.me/explotos/CVE-2018-11629Third Party Advisory
http://www.lutron.com/TechnicalDocumentLibrary/040249.pdf
https://reversecodes.wordpress.com/2018/06/02/0-day-tomando-el-control-de-las-instalaciones-de-la-nasa-en-cabo-canaveral/Mitigation, Third Party Advisory

Timeline

Published: Jun 2, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-11681?

How severe is CVE-2018-11681?

CVE-2018-11681 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 4.30% probability of exploitation in the next 30 days.

How do I fix CVE-2018-11681?

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-2018-11681?

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

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Source: NVD / NIST