CVE-2023-6221Network attack vector

Cloud secrets disclosure via insufficient access control

Published Feb 1, 2024 · Updated May 15, 2025

Cloud access-control failure in MachineSense FeverWarn ESP32, RaspberryPi, and DataHub RaspberryPi allows remote authenticated users to read secrets. The cloud integration and deployment environment insufficiently restricts internal procedures that expose source code and secret credentials. Access to those procedures is required, and the published record does not identify the cloud provider, interface, or defective authentication check.

CVSS severity7.7
High
EPSS probability0.58%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cloud access-control failure in MachineSense FeverWarn ESP32, RaspberryPi, and DataHub RaspberryPi allows remote authenticated users to read secrets. The cloud integration and deployment environment insufficiently restricts internal procedures that expose source code and secret credentials. Access to those procedures is required, and the published record does not identify the cloud provider, interface, or defective authentication check.

The record

CVE
CVE-2023-6221
Published
Feb 1, 2024
Updated
May 15, 2025
Vendor
MachineSense
Product
FeverWarn
Classifications
CWE-306, T1552
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 1, 2024CVE publishedPublication date reported by the CVE source.
  2. May 15, 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?

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

  1. Affected versionversion=DataHub RaspberryPi
  2. Affected versionversion=ESP32
  3. Affected versionversion=RaspberryPi

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

MachineSense · FeverWarnversion=DataHub RaspberryPi; version=ESP32; version=RaspberryPi

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
7.7ICS-CERTCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function
T1552Unsecured Credentials

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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