CVE-2026-77056 (GCVE-0-2026-77056)
Vulnerability from cvelistv5 – Published: 2026-10-26 14:45 – Updated: 2026-10-26 16:46 X_Open Source
VLAI
EPSS
VEX
Title
Use of Default Credentials in boneIO
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-26 16:25 UTC
CWE
- CWE-1392 - Use of Default Credentials
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://cert.pl/en/posts/2026/10/CVE-2026-77052 | third-party-advisory |
| https://boneio.eu/en/docs/black | product |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| boneIO | black_debian_images |
Affected:
1.2.0 , < 1.6.0
(semver)
cpe:2.3:a:boneio:black_debian_images:*:*:*:*:*:*:*:* |
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