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CVE-2025-59449

Quick assessment

Affected
YoSmart YoLink MQTT broker
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

YoSmart YoLink MQTT broker是美国YoSmart公司的一个消息代理服务器。 YoSmart YoLink MQTT broker 2025-10-02及之前版本存在安全漏洞，该漏洞源于授权控制不足，可能导致跨账户攻击。

CVSS 4.9 · Medium EPSS 0.28% · P19
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I. Basic Information for CVE-2025-59449

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不正确
Source: CVE Program / CVE List V5
Vulnerability Title
YoSmart YoLink MQTT broker 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
YoSmart YoLink MQTT broker是美国YoSmart公司的一个消息代理服务器。 YoSmart YoLink MQTT broker 2025-10-02及之前版本存在安全漏洞，该漏洞源于授权控制不足，可能导致跨账户攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
YoSmart YoLink MQTT broker 0 ~ 2025-10-02 -

II. Public POCs for CVE-2025-59449

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III. Intelligence Information for CVE-2025-59449

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Security Blog Posts for CVE-2025-59449 (1)

Other References for CVE-2025-59449 (1)

Other References for CVE-2025-59449 (1)

Same Patch Batch · YoSmart · 2025-10-06 · 6 CVEs total

CVE-2025-59452 5.8 MEDIUM YoSmart YoLink API 安全漏洞
CVE-2025-59448 4.7 MEDIUM YoSmart YoLink Ecosystem 安全漏洞
CVE-2025-59450 4.3 MEDIUM YoSmart YoLink Smart Hub 安全漏洞
CVE-2025-59451 3.5 LOW YoSmart YoLink Application 安全漏洞
CVE-2025-59447 2.2 LOW YoSmart YoLink Smart Hub 安全漏洞

IV. Related Vulnerabilities

Same vendor: YoSmart
Same weakness: CWE-863

V. Comments for CVE-2025-59449

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