Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://bishopfox.com/blog/advisories
- https://bishopfox.com/blog/how-a-20-smart-device-gave-me-access-to-your-home
- https://shop.yosmart.com/pages/product-support
- https://shop.yosmart.com/pages/sa-2025-001
FAQ
What is CVE-2025-59449?
CVE-2025-59449 is a vulnerability with a CVSS score of 4.9 (MEDIUM). 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 ...
How severe is CVE-2025-59449?
CVE-2025-59449 has been rated MEDIUM with a CVSS base score of 4.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-59449?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.