Dashboard / CVE-2026-77056

CVE-2026-77056

HIGH
MEDIUM Priority: 0.03 BB Relevance: 59/100
Published: 2026-10-26 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Adjacent Low Complexity No Auth No Interaction Conf. Impact

CVSS Vector Breakdown

AV: Adjacent
AC: Low
PR: None
UI: None
AT: None
VC: High
VI: None
VA: None

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.

Weakness Classification (1)

References & Advisories (2)

Bug Bounty Relevance

59 / 100
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

7.1 / 10.0 v4.0
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

EPSS — Exploitation Probability

0.36%
Raw Score 0.003550
Percentile 29.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00355
2026-10-28
0.00355

Intelligence Sources

mitre ref →
nvd ref →

External Links