CVE-2025-59449

MEDIUM EPSS 17.8%

Published Oct 6, 20259mo ago · Modified Jun 17, 20262w ago

4.9 CVSS 3.1

Medium

Published Oct 6, 2025 9mo ago

Last Modified Jun 17, 2026 2w ago

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 Details

Base Score

4.9

Exploitability

1.8

Impact

2.7

Vector string

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N

Attack Vector Network

Attack Complexity High

Privileges Required Low

User Interaction None

Scope Changed

Confidentiality Low

Integrity Low

Availability None

Threat Intelligence

EPSS Exploit Probability

17.8% percentile

Exploit & Patch Status

No Known Exploit

No Patch Available

Weaknesses 1

CWE-863 Incorrect Authorization Authorization

References 4

bishopfox.com https://bishopfox.com/blog/advisories
bishopfox.com https://bishopfox.com/blog/how-a-20-smart-device-gave-me-access-to-your-home
shop.yosmart.com https://shop.yosmart.com/pages/product-support
shop.yosmart.com https://shop.yosmart.com/pages/sa-2025-001

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.