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TI-2025-36993 Aliases CVE-2025-59448GHSA-wvrh-5769-mm5j

Cleartext transmission of sensitive information in YoSmart YoLink ecosystem

Priority LOW 21CWE-319Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-319.

Summary

Components of the YoSmart YoLink ecosystem through 2025-10-02 leverage unencrypted MQTT to communicate over the internet. An attacker with the ability to monitor network traffic could therefore obtain sensitive information or tamper with the traffic to control affected devices. This affects YoLink Hub 0382, YoLink Mobile Application 1.40.41, and YoLink MQTT Broker. NOTE: The vendor states that the vulnerability described (related to insecure transmission) only impacts the legacy mobile application logic, not the Hub hardware or firmware. The Hub functions solely as a pass-through (transparent gateway) for LoRa wireless data and does not inspect or process the application layer data.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0018 7th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
YoSmartYoLink ecosystemup to 2025-10-02—No fix listedCNA
  • YoLink ecosystem VendorYoSmart Affected up to 2025-10-02 Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-59448
  2. 2026-10-03 Alias added: GHSA-wvrh-5769-mm5j

References

Other 4

  • TI-2025-36997 The YoSmart YoLink API through 2025-10-02 uses an endpoint URL that is derived from a… CVSS 3.1MEDIUM 5.8
  • TI-2025-36994 Incorrect authorization in YoSmart YoLink MQTT broker CVSS 3.1MEDIUM 4.9
  • TI-2025-36995 Cleartext storage of sensitive information in YoSmart YoLink Smart Hub CVSS 3.1MEDIUM 4.3
  • TI-2025-36996 The YoSmart YoLink application through 2025-10-02 has session tokens with unexpectedly long lifetimes. CVSS 3.1LOW 3.5
  • TI-2025-36992 The YoSmart YoLink Smart Hub device 0382 exposes a UART debug interface. CVSS 3.1LOW 2.2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences