CVE-2026-77056

Published: Ott 26, 2026 Last Modified: Ott 26, 2026
ExploitDB:
Other exploit source:
Google Dorks:
HIGH 7,1
Source: [email protected]
Attack Vector: adjacent
Attack Complexity: low
Privileges Required: none
User Interaction: none
Confidentiality: N/A
Integrity: N/A
Availability: N/A

Description

boneIO black_debian_images ships with a Mosquitto MQTT broker that uses the same default credentials on all devices. These credentials are publicly documented on github, and there is no indication in the instructions to change them. A remote attacker can use them to gain full read and write access to the broker, allowing control of connected relays, blinds, and gates, and injection of fake entities into a linked Home Assistant installation.

This issue was fixed in version 1.6.0 of the image: MQTT passwords are generated per device at first boot. Devices upgraded from earlier versions keep their existing broker credentials; from boneio 1.6.0 the web panel reports credentials that are still the published defaults, and the owner has to change them.

1392

Use of Default Credentials

Incomplete
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Authentication
Potential Impacts:
Gain Privileges Or Assume Identity
Applicable Platforms
Technologies: ICS/OT, Not Technology-Specific
View CWE Details
https://boneio.eu/en/docs/black
https://boneio.eu/en/docs/black
https://cert.pl/en/posts/2026/10/CVE-2026-77052
https://cert.pl/en/posts/2026/10/CVE-2026-77052