Description
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.
Metrics
CVSS 3.1 8.8/10
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linear | WADWAZ-1 | 3.43 |
| Linear | WAPIRZ-1 | 3.43 |
| Silicon Labs | 100 series | all |
| Silicon Labs | 200 series | all |
| Silicon Labs | 300 series | all |
References
- https://doi.org/10.1109/ACCESS.2021.3138768Broken Link
- https://github.com/CNK2100/VFuzz-publicThird Party Advisory
- https://ieeexplore.ieee.org/document/9663293Broken Link
- https://kb.cert.org/vuls/id/142629Third Party Advisory, US Government Resource
- https://www.kb.cert.org/vuls/id/142629Third Party Advisory, US Government Resource
- https://doi.org/10.1109/ACCESS.2021.3138768Broken Link
- https://github.com/CNK2100/VFuzz-publicThird Party Advisory
- https://ieeexplore.ieee.org/document/9663293Broken Link
- https://kb.cert.org/vuls/id/142629Third Party Advisory, US Government Resource
- https://www.kb.cert.org/vuls/id/142629Third Party Advisory, US Government Resource
Timeline
- Published
- Jan 10, 2022
- Last modified
- Jun 17, 2026
- NVD status
- Modified