What’s Vulnerable › Vulnerabilities

CVE-2020-28952

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-03-09 · updated 2026-06-17
• Weakness: CWE-798

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.

Affected products

• Homey Firmware: before 5.0.0 — fixed in 5.0.0
• Homey Pro Firmware: before 5.0.0 — fixed in 5.0.0

How to fix

Upgrade to a fixed version: Homey Firmware 5.0.0; Homey Pro Firmware 5.0.0. Check the vendor advisory for mitigations.

References

• https://developer.athom.com/firmware
• https://homey.app/en-us/
• https://yougottahackthat.com/blog/1260/athom-homey-security-static-and-well-known-keys-cve-2020-28952
• https://developer.athom.com/firmware
• https://homey.app/en-us/
• https://yougottahackthat.com/blog/1260/athom-homey-security-static-and-well-known-keys-cve-2020-28952

Get alerted when CVE-2020-28952 or the next vulnerability affects your stack