Threats affecting pkg:github/black_debian_images

boneIO black_debian_images stores the Mosquitto MQTT broker password file at /etc/mosquitto/passwd with world-readable permissions. Any local user can read the password hashes for all MQTT accounts and perform offline dictionary attacks. This issue was fixed in version 1.6.0.

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.

CVE-2026-77055 is a critical vulnerability in boneIO black_debian_images where the boneio service account is granted excessive privileges, including passwordless sudo access and membership in the docker group. This allows a local attacker who compromises the boneio user to escalate privileges to root. The issue is fixed in version 1.6.0 by removing these privileges and enforcing command restrictions with cryptographic verification.