Z-Wave devices based on Silicon Labs 100, 200, and 300 series chipsets do not support encryption, allowing an attacker within radio range to take control of or cause a denial of service to a vulnerable device. An attacker can also capture and replay Z-Wave traffic. Firmware upgrades cannot directly address this vulnerability as it is an issue with the Z-Wave specification for these legacy chipsets. One way to protect against this vulnerability is to use 500 or 700 series chipsets that support Security 2 (S2) encryption. As examples, the Linear WADWAZ-1 version 3.43 and WAPIRZ-1 version 3.43 (with 300 series chipsets) are vulnerable.
The product does not encrypt sensitive or critical information before storage or transmission.
| Link | Tags |
|---|---|
| https://kb.cert.org/vuls/id/142629 | third party advisory us government resource |
| https://ieeexplore.ieee.org/document/9663293 | broken link |
| https://github.com/CNK2100/VFuzz-public | third party advisory |
| https://doi.org/10.1109/ACCESS.2021.3138768 | broken link |
| https://www.kb.cert.org/vuls/id/142629 | third party advisory us government resource |