Vulnerability in Linear Wadwaz-1
CVE-2020-9057
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (33.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 33.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Linear Wadwaz-1 — versions 3.43
- Linear Wapirz-1 — versions 3.43
- Silabs 100 Series Firmware
- Silabs 200 Series Firmware
- Silabs 300 Series Firmware
- Silicon Labs 100 Series — versions all
- Silicon Labs 200 Series — versions all
- Silicon Labs 300 Series — versions all
Weakness classification (CWE)
Public proof-of-concept exploits
References
- kb.cert.org/vuls/id/142629 (US Government Resource, Third Party Advisory, third-party-advisory)
- ieeexplore.ieee.org/document/9663293 (Broken Link)
- github.com/CNK2100/VFuzz-public (Third Party Advisory)
- doi.org/10.1109/ACCESS.2021.3138768 (Broken Link)
- www.kb.cert.org/vuls/id/142629 (US Government Resource, Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2020-9057?
- CVE-2020-9057 is a high-severity vulnerability in Linear Wadwaz-1, classified under Missing Encryption of Sensitive Data. CVSS score: 8.8/10. Published 2022-01-10.
- How severe is CVE-2020-9057?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2020-9057 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.