Description
The YoSmart YoLink MQTT broker through 2025-10-02 does not enforce sufficient authorization controls to prevent cross-account attacks, allowing an attacker to remotely operate affected devices if the attacker obtains the associated device IDs. Because YoLink device IDs are predictable, an attacker can exploit this to gain full control over any other YoLink user's devices.
Problem types
CWE-863 Incorrect Authorization
Product status
Any version
References
shop.yosmart.com/pages/product-support
bishopfox.com/...20-smart-device-gave-me-access-to-your-home
