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.
Published: 2026-10-26
Score: 7.1 High
EPSS: n/a
KEV: No
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History

Mon, 26 Oct 2026 15:00:00 +0000

Type Values Removed Values Added
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.
Title Use of Default Credentials in boneIO
First Time appeared Boneio
Boneio black Debian Images
Weaknesses CWE-1392
CPEs cpe:2.3:a:boneio:black_debian_images:*:*:*:*:*:*:*:*
Vendors & Products Boneio
Boneio black Debian Images
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'}


Subscriptions

Boneio Black Debian Images
cve-icon MITRE

Status: PUBLISHED

Assigner: CERT-PL

Published:

Updated: 2026-10-26T16:46:44.867Z

Reserved: 2026-08-20T09:37:37.787Z

Link: CVE-2026-77056

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-10-26T15:16:43.260

Modified: 2026-10-26T15:16:43.260

Link: CVE-2026-77056

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses