CVE-2020-9057

Device control via unencrypted Z-Wave traffic

Published Jan 7, 2022 · Updated Sep 16, 2024

Missing encryption in Linear WADWAZ-1 version 3.43 allows remote attackers to take control or cause service interruption via radio-range Z-Wave traffic. Legacy 300-series chipsets transmit application traffic without encryption, allowing capture and replay of messages that control the sensor. The attacker must be within radio range and needs no authentication; consequences include unauthorized device control, traffic disclosure, replay, or denial of service.

CVSS severity8.8
High
EPSS probability0.41%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing encryption in Linear WADWAZ-1 version 3.43 allows remote attackers to take control or cause service interruption via radio-range Z-Wave traffic. Legacy 300-series chipsets transmit application traffic without encryption, allowing capture and replay of messages that control the sensor. The attacker must be within radio range and needs no authentication; consequences include unauthorized device control, traffic disclosure, replay, or denial of service.

The record

CVE
CVE-2020-9057
Published
Jan 7, 2022
Updated
Sep 16, 2024
Vendor
Linear
Product
WADWAZ-1
Classifications
CWE-311, CWE-311, T1040
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 7, 2022CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.43

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Linear · WADWAZ-1version=3.43
Linear · WAPIRZ-1version=3.43

Published CVSS scores

8.8NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.3NVDAV:A/AC:L/Au:N/C:C/I:C/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-311Missing Encryption of Sensitive Data
CWE-311Missing Encryption of Sensitive Data
T1040Network Sniffing

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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