CVE-2025-59449 describes an authorization bypass vulnerability in the YoSmart YoLink MQTT broker, affecting versions through 2025-10-02. An attacker can remotely control other users' YoLink devices by obtaining predictable device IDs, leading to cross-account attacks. Rated as MEDIUM severity with a CVSS score of 4.9, this vulnerability has a network attack vector, high attack complexity, and results in low confidentiality and integrity impacts. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
| YoSmart | YoLink MQTT Broker | >= 0, <= 2025-10-02CNA affecteddefault unknown |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.