CVE-2023-49617Network attack vector

Unauthorized data access and modification via unauthenticated API

Published Feb 1, 2024 · Updated Jun 6, 2025

Missing authentication in the MachineSense FeverWarn API allows remote attackers to read and modify sensitive information without credentials. The API exposes sensitive read and write operations without verifying the caller's identity, although public sources name no endpoint or request format. The issue affects the ESP32, RaspberryPi, and DataHub RaspberryPi variants; network access is the only reported gate, and no service interruption is described.

CVSS severity10.0
Critical
EPSS probability0.80%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authentication in the MachineSense FeverWarn API allows remote attackers to read and modify sensitive information without credentials. The API exposes sensitive read and write operations without verifying the caller's identity, although public sources name no endpoint or request format. The issue affects the ESP32, RaspberryPi, and DataHub RaspberryPi variants; network access is the only reported gate, and no service interruption is described.

The record

CVE
CVE-2023-49617
Published
Feb 1, 2024
Updated
Jun 6, 2025
Vendor
MachineSense
Product
FeverWarn
Classifications
CWE-306
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 6, 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 privilegesunauthenticated

What is affected?

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

Published CVSS scores

10.0ICS-CERTCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-306Missing Authentication for Critical Function

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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