CVE-2020-28952

Name: CVE-2020-28952
Creator: NVD / NIST
Published: 2021-03-09T20:15:12.68+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 1.26%

Last modified Jun 17, 2026

CVE-2020-28952 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. An issue was discovered on Athom Homey and Homey Pro devices before 5.0.0. ZigBee hub devices should generate a unique Standard Network Key that is then exchanged with all enrolled devices so that all inter-device communication is encrypted. EPSS estimates a 1.26% chance of exploitation in the next 30 days.

Description

An issue was discovered on Athom Homey and Homey Pro devices before 5.0.0. ZigBee hub devices should generate a unique Standard Network Key that is then exchanged with all enrolled devices so that all inter-device communication is encrypted. However, the cited Athom products use another widely known key that is designed for testing purposes: "01030507090b0d0f00020406080a0c0d" (the decimal equivalent of 1 3 5 7 9 11 13 15 0 2 4 6 8 10 12 13), which is human generated and static across all issued devices.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

1.26%

65.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-798

Affected Software

Vendor	Product	Versions
Homey	Homey Firmware	< 5.0.0
Homey	Homey Pro Firmware	< 5.0.0

References

https://developer.athom.com/firmwareRelease Notes, Vendor Advisory
https://homey.app/en-us/Product, Vendor Advisory
https://yougottahackthat.com/blog/1260/athom-homey-security-static-and-well-known-keys-cve-2020-28952Third Party Advisory
https://developer.athom.com/firmwareRelease Notes, Vendor Advisory
https://homey.app/en-us/Product, Vendor Advisory
https://yougottahackthat.com/blog/1260/athom-homey-security-static-and-well-known-keys-cve-2020-28952Third Party Advisory

Timeline

Published: Mar 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-28952?

How severe is CVE-2020-28952?

CVE-2020-28952 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.26% probability of exploitation in the next 30 days.

How do I fix CVE-2020-28952?

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-2020-28952?

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

Scan your code now

Source: NVD / NIST