CVE-2025-59447Public exploit

Credential disclosure via exposed UART boot logs

Published Oct 6, 2025 · Updated Oct 6, 2025

Information exposure in YoSmart YoLink Hub 0382 allows physically proximate attackers to read network credentials through its UART port. The exposed ESP32 debug interface transmits bootloader and application logs over UART, including an API URL that returns device-specific MQTT credentials. Direct circuit-board access and a serial connection are required; the disclosed credentials permit MQTT topic subscription and Wi-Fi credential interception.

CVSS severity2.2
Low
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in YoSmart YoLink Hub 0382 allows physically proximate attackers to read network credentials through its UART port. The exposed ESP32 debug interface transmits bootloader and application logs over UART, including an API URL that returns device-specific MQTT credentials. Direct circuit-board access and a serial connection are required; the disclosed credentials permit MQTT topic subscription and Wi-Fi credential interception.

The record

CVE
CVE-2025-59447
Published
Oct 6, 2025
Updated
Oct 6, 2025
Vendor
YoSmart
Product
YoLink Hub
Classifications
CWE-497, T1552
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 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=0382

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

YoSmart · YoLink Hubversion=0382

Published CVSS scores

2.2MITRECVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:C/C:L/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.

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No observations available

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

Weakness, pattern, technique

CWE-497Exposure of Sensitive System Information to an Unauthorized Control Sphere
T1552Unsecured Credentials

Public exploit references

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Technologies

Your stack

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Your stack

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