Z-Wave devices based on Silicon Labs 100, 200, and 300 series chipsets do not support…
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-311.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Linear | WADWAZ-1 | 3.43 | — | No fix listed | CNA |
| Linear | WAPIRZ-1 | 3.43 | — | No fix listed | CNA |
| silabs.com | 100 series | all | — | No fix listed | CNA |
| silabs.com | 200 series | all | — | No fix listed | CNA |
| silabs.com | 300 series | all | — | No fix listed | CNA |
- WADWAZ-1 VendorLinear Affected 3.43 Fixed in — No fix listed CNA
- WAPIRZ-1 VendorLinear Affected 3.43 Fixed in — No fix listed CNA
- 100 series Vendorsilabs.com Affected all Fixed in — No fix listed CNA
- 200 series Vendorsilabs.com Affected all Fixed in — No fix listed CNA
- 300 series Vendorsilabs.com Affected all Fixed in — No fix listed CNA
CPE configurations NVD · 5
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:linear:wadwaz-1:3.43:*:*:*:*:*:*:* | 3.43 | Vulnerable | Linear |
| cpe:2.3:o:linear:wapirz-1:3.43:*:*:*:*:*:*:* | 3.43 | Vulnerable | Linear |
| cpe:2.3:o:silabs:100_series_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | silabs.com |
| cpe:2.3:o:silabs:200_series_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | silabs.com |
| cpe:2.3:o:silabs:300_series_firmware:*:*:*:*:*:*:*:* | all versions | Vulnerable | silabs.com |
- cpe:2.3:o:linear:wadwaz-1:3.43:*:*:*:*:*:*:* Versions 3.43 Vulnerable ·Linear
- cpe:2.3:o:linear:wapirz-1:3.43:*:*:*:*:*:*:* Versions 3.43 Vulnerable ·Linear
- cpe:2.3:o:silabs:100_series_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·silabs.com
- cpe:2.3:o:silabs:200_series_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·silabs.com
- cpe:2.3:o:silabs:300_series_firmware:*:*:*:*:*:*:*:* Versions all versions Vulnerable ·silabs.com
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-9057
- 2026-10-03 Alias added: GHSA-pwj3-5896-6xh2
References
Sources
- CVE-2020-9057 · CVE Program
- CVE-2020-9057 · NVD
- FIRST EPSS
- GHSA-pwj3-5896-6xh2 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences