What’s Vulnerable › Vulnerabilities

CVE-2020-9057

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-10 · updated 2026-06-17
• Weakness: CWE-311

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.

Affected products

• Linear WADWAZ-1: 3.43
• Linear WAPIRZ-1: 3.43
• Silabs 100 Series Firmware: all versions
• Silabs 200 Series Firmware: all versions
• Silabs 300 Series Firmware: all versions

References

• https://doi.org/10.1109/ACCESS.2021.3138768
• https://github.com/CNK2100/VFuzz-public
• https://ieeexplore.ieee.org/document/9663293
• https://kb.cert.org/vuls/id/142629
• https://www.kb.cert.org/vuls/id/142629
• https://doi.org/10.1109/ACCESS.2021.3138768
• https://github.com/CNK2100/VFuzz-public
• https://ieeexplore.ieee.org/document/9663293
• https://kb.cert.org/vuls/id/142629
• https://www.kb.cert.org/vuls/id/142629

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