CVE-2020-9057

2022-01-0704:30:23

CWE-311

certcc

www.cve.org

z-wave

silicon labs

encryption

vulnerable

firmware upgrade

chipsets

AI Score

8.8

Confidence

High

EPSS

0.002

Percentile

53.8%

JSON

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.

CNA Affected

[
  {
    "product": "WADWAZ-1",
    "vendor": "Linear",
    "versions": [
      {
        "status": "affected",
        "version": "3.43"
      }
    ]
  },
  {
    "product": "WAPIRZ-1",
    "vendor": "Linear",
    "versions": [
      {
        "status": "affected",
        "version": "3.43"
      }
    ]
  },
  {
    "product": "100 series",
    "vendor": "Silicon Labs",
    "versions": [
      {
        "status": "affected",
        "version": "all"
      }
    ]
  },
  {
    "product": "200 series",
    "vendor": "Silicon Labs",
    "versions": [
      {
        "status": "affected",
        "version": "all"
      }
    ]
  },
  {
    "product": "300 series",
    "vendor": "Silicon Labs",
    "versions": [
      {
        "status": "affected",
        "version": "all"
      }
    ]
  }
]