CVE-2026-125086
Deferred Deferred - Pending Action

Hard-Coded Credentials in D-Link M60 emDaemon MQTT Broker

Publication date: 2026-11-10

Last updated on: 2026-11-10

Assigner: VulDB

Description
A vulnerability has been found in D-Link M60 1.12.B01. Impacted is the function system of the file /etc/emDaemon/mosquitto.conf of the component emDaemon MQTT Broker. Such manipulation leads to hard-coded credentials. The attack can be executed remotely. The exploit has been disclosed to the public and may be used.

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Meta Information

Published
2026-11-10
Last Modified
2026-11-10
Generated
2026-11-10
AI Q&A
2026-11-10
EPSS Evaluated
N/A
NVD
CVE-2026-125086
EUVD
EUVD-2026-120701

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
mosquitto mosquitto 2.0.14
d-link m60 1.12.b01

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-259 The product contains a hard-coded password, which it uses for its own inbound authentication or for outbound communication to external components.
CWE-798 The product contains hard-coded credentials, such as a password or cryptographic key.

Attack-Flow Graph

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Executive Summary

This vulnerability involves hard-coded credentials in the D-Link M60 router firmware version 1.12.B01. The MQTT broker (mosquitto) has default admin credentials (username: admin, password: admin) embedded in the system. These credentials are written to configuration files during every boot, making them persistent even if manually changed. The broker listens on all network interfaces, allowing remote access.

Detection Guidance

Check if the MQTT broker on the D-Link M60 is listening on port 1883 using netstat or ss commands. Verify if default credentials 'admin:admin' allow access by attempting to connect via MQTT clients like mosquitto_sub or mosquitto_pub.

Impact Analysis

An attacker could remotely connect to the MQTT broker using the hard-coded credentials. Once connected, they could inject malicious commands to control the router, such as changing Wi-Fi settings, managing mesh network devices, or forcing firmware updates. These actions are executed with root privileges, giving full control over the device.

Compliance Impact

This vulnerability may violate compliance with GDPR and HIPAA due to hard-coded credentials allowing unauthorized access to network devices. Unauthorized access risks exposing sensitive data, which could lead to data breaches under GDPR. For HIPAA, unauthorized control of network devices could compromise protected health information transmitted over the network.

Mitigation Strategies

Disable the MQTT broker service if not required. Change default credentials if possible. Update firmware to a patched version if available. Restrict network access to the MQTT port 1883 using firewall rules.

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