What is CVE-2019-20470?

CVE-2019-20470 is a high-severity vulnerability in Tk-Star Q90 Junior Gps Horloge, classified under Initialization of a Resource with an Insecure Default. CVSS score: 7.5/10. Published 2021-02-01.

How severe is CVE-2019-20470?

High severity. CVSS v3 base score is 7.5 out of 10.

RCE in Tk-Star Q90 Junior Gps Horloge

CVE-2019-20470

An issue was discovered on TK-Star Q90 Junior GPS horloge 3.1042.9.8656 devices. It performs actions based on certain SMS commands. This can be used to set up a voice communication channel from the watch to any telephone number, initiated by sending a specific SMS and using the default password, e.g., pw,<password>,call,<mobile_number> triggers an outbound call from the watch. The password is sometimes available because of CVE-2019-20471.

Published 2021-02-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

EPSS exploit prediction

EPSS: 0.019 (79.2th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000

Affected products

Tk-Star Q90 Junior Gps Horloge
Tk-Star Q90 Junior Gps Horloge Firmware — versions 3.1042.9.8656

Weakness classification (CWE)

References

www.tk-star.com (Vendor Advisory)
www.eurofins-cybersecurity.com/news/connected-devices-smart-watches/ (Third Party Advisory)
seclists.org/fulldisclosure/2024/Jul/14 (mailing-list)

Frequently asked questions

What is CVE-2019-20470?: CVE-2019-20470 is a high-severity vulnerability in Tk-Star Q90 Junior Gps Horloge, classified under Initialization of a Resource with an Insecure Default. CVSS score: 7.5/10. Published 2021-02-01.
How severe is CVE-2019-20470?: High severity. CVSS v3 base score is 7.5 out of 10.