CVE-2025-59449
Medium
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.
SeverityMedium
CVSS4.9
Exploit probability—
ProductYoLink MQTT broker
PublishedOct 6, 2025
First seenOct 6, 2025
Weakness typeCWE-863Incorrect authorization
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| YoSmart YoLink MQTT broker | v ≤ 2025-10-02 | — |
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