Yarbo Android/iOS Mobile Application and Cloud Infrastructure Use of Hard-coded Credentials
CVE-2026-10557

9.3CRITICAL

Key Information:

Vendor

Yarbo

Status
Yarbo Android/iOS Mobile Application
Yarbo Cloud MQtt Infrastructure
Vendor
CVE Published:
12 June 2026

What is CVE-2026-10557?

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.

Affected Version(s)

Yarbo Android/IOS mobile application 0 < 3.17.4

Yarbo Cloud MQTT infrastructure All

References

https://www.cisa.gov/news-events/ics-advisories/icsa-26-1...
https://github.com/cisagov/CSAF/blob/develop/csaf_files/O...

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Markus Lassfolk of Truesec reported this vulnerability to CISA.
.