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CVE-2026-77056— Use of Default Credentials in boneIO

Quick assessment

Affected
boneIO black_debian_images
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

boneIO 的 black_debian_images 镜像预装了 Mosquitto MQTT 代理，且所有设备均使用相同的默认凭据。这些凭据已在 GitHub 上公开披露，且相关说明文档中并未提示用户需要修改它们。远程攻击者可利用这些默认凭据获取对代理的完整读写权限，从而控制已连接的继电器、百叶窗和门禁等设备，并向关联的 Home Assistant 安装注入虚假实体。 该问题已在镜像版本 1.6.0 中修复：首次启动时，每台设备会生成专属的 MQTT 密码。从早期版本升级的设备将保留其现有的代理凭据；在 b

CVSS 7.1 · High
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I. Basic Information for CVE-2026-77056

Vulnerability Information
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Vulnerability Title
Use of Default Credentials in boneIO
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1392
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
boneIO black_debian_images 1.2.0 ~ 1.6.0 -

II. Public POCs for CVE-2026-77056

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III. Intelligence Information for CVE-2026-77056

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Security Blog Posts for CVE-2026-77056 (1)

Vendor Pages for CVE-2026-77056 (1)

Same Patch Batch · boneIO · 2026-10-26 · 11 CVEs total

CVE-2026-77055 9.3 CRITICAL Improper Privilege Assignment in boneIO
CVE-2026-77059 8.8 HIGH TOCTOU Race Condition in boneIO
CVE-2026-77052 8.7 HIGH Missing Authentication for Node-RED in boneIO
CVE-2026-77053 8.7 HIGH Missing Authentication in Default Configuration in boneIO
CVE-2026-77054 6.9 MEDIUM Cleartext Storage of Sensitive Information in boneIO
CVE-2026-77062 6.9 MEDIUM Clickjacking in boneIO
CVE-2026-77060 6.8 MEDIUM Incorrect Permission Assignment for Critical Resource in boneIO
CVE-2026-77061 5.3 MEDIUM Missing Authentication for Critical Function in boneIO
CVE-2026-77058 5.1 MEDIUM Cross-Site Request Forgery (CSRF) in boneIO
CVE-2026-77057 2.3 LOW Improper Restriction of Excessive Authentication Attempts in boneIO

IV. Related Vulnerabilities

Same product: black_debian_images
Same vendor: boneIO
Same weakness: CWE-1392