---
id: CVE-2026-77060
title: Incorrect Permission Assignment for Critical Resource in boneIO
summary: >-
  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.…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N'
cvssSource: cna
cwe:
  - CWE-732
vendor: boneIO
product: black_debian_images
affected:
  - black_debian_images >= 1.2.0 < 1.6.0
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-26T15:30:08.598235Z'
published: '2026-10-26'
updated: '2026-10-26'
sourceUpdated: '2026-10-26T15:35:49.996Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-77060'
references:
  - url: 'https://cert.pl/en/posts/2026/10/CVE-2026-77052'
  - url: 'https://boneio.eu/en/docs/black'
tags:
  - cve.org
ingestedAt: '2026-10-26T15:29:30.510Z'
---

## Overview

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.

## Affected

- `black_debian_images >= 1.2.0 < 1.6.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.