CVE-2023-42144

Wi-Fi password disclosure via unencrypted initial setup

Published Jan 23, 2024 · Updated Jun 20, 2025

Cleartext transmission in Shelly TRV firmware 2.1.8 allows local users to obtain the Wi-Fi password during initial setup. The device creates an unauthenticated, unencrypted Wi-Fi access point and sends the router credentials to its setup service over HTTP without additional encryption. Attackers within wireless range must observe setup traffic while the credentials are submitted, and the demonstrated consequence is limited to Wi-Fi password disclosure.

CVSS severity5.5
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cleartext transmission in Shelly TRV firmware 2.1.8 allows local users to obtain the Wi-Fi password during initial setup. The device creates an unauthenticated, unencrypted Wi-Fi access point and sends the router credentials to its setup service over HTTP without additional encryption. Attackers within wireless range must observe setup traffic while the credentials are submitted, and the demonstrated consequence is limited to Wi-Fi password disclosure.

The record

CVE
CVE-2023-42144
Published
Jan 23, 2024
Updated
Jun 20, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-319, T1040
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jan 23, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 20, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-319Cleartext Transmission of Sensitive Information
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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