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Description

The Yarbo Android and iOS applications contain hard-coded MQTT broker credentials that are identical for all users and all devices. These credentials are embedded in the application binary and are readily extractable via APK decompilation. The credentials provide access to cloud MQTT brokers carrying real-time telemetry for the entire global Yarbo robot fleet. They allow both wildcard subscription to all robot telemetry topics and publishing to any robot's command topic using only the robot's serial number.

PUBLISHED Reserved 2026-06-01 | Published 2026-06-12 | Updated 2026-06-12 | Assigner icscert




CRITICAL: 9.3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CRITICAL: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-798 Use of Hard-coded Credentials

Product status

Default status
unaffected

Any version before 3.17.4
affected

Default status
unaffected

All (custom)
affected

Credits

Markus Lassfolk of Truesec reported this vulnerability to CISA. finder

References

www.cisa.gov/news-events/ics-advisories/icsa-26-162-01

github.com/...p/csaf_files/OT/white/2026/icsa-26-162-01.json

cve.org (CVE-2026-10557)

nvd.nist.gov (CVE-2026-10557)

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