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CVE-2026-7368

Yarbo Android/iOS Mobile Application and Cloud Infrastructure Missing Authorization

The Yarbo cloud does not enforce per-device or per-user authorization. Any client possessing valid credentials, whether the shared hard-coded credentials or legitimate per-user credentials, can subscribe to wildcard topics covering all robots globally, and can publish to any robot's command topic using only the robot's serial number (disclosed in the telemetry stream). Even after removal of hard-coded credentials from the app, a single compromised credential could still provide fleet-wide access without per-device access controls.

CVSS 4.0 · 8.6 High EPSS < 1% KEV · Not listed
Vendors
Yarbo
Products
Yarbo Android/ios Mobile Application Yarbo Cloud Mqtt Infrastructure
CVE-2026-10557

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

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.

CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
Vendors
Yarbo
Products
Yarbo Android/ios Mobile Application Yarbo Cloud Mqtt Infrastructure
CVE-2026-7413

Persistent undocumented backdoor access in Yarbo robot

A hidden, persistent backdoor was found in Yarbo firmware v2.3.9 that provides remote, unauthenticated (or weakly authenticated) access to privileged functionality. The backdoor is undocumented, cannot be disabled via user-facing settings, and survives factory reset and ordinary firmware updates.

CVSS 3.1 · 7.2 High EPSS < 1% KEV · Not listed
Vendors
Yarbo
Products
Firmware Lawn Mower Lawn Mower Firmware and 2 more
CVE-2026-7414

Hardcoded credentials in Yarbo robot firmware

Yarbo firmware v2.3.9 contains hardcoded administrative credentials embedded in the firmware image. These credentials are identical across all devices running this firmware and cannot be changed or removed by end users, enabling trivial unauthorized access to device management interfaces by anyone who knows them.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Yarbo
Products
Firmware Lawn Mower Lawn Mower Firmware and 2 more
CVE-2026-7415

Open MQTT orchestration without read/write ACLs in Yarbo robot firmware

The MQTT broker embedded in Yarbo firmware v2.3.9 is configured to allow anonymous connections with no topic-level read or write ACLs. Any host on the same network can subscribe to sensitive telemetry topics or publish control messages directly to the robot without authentication or authorization of any kind.

CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Vendors
Yarbo
Products
Firmware Lawn Mower Lawn Mower Firmware and 2 more