What is CVE-2019-20473?

CVE-2019-20473 is a medium-severity vulnerability in Tk-Star Q90 Junior Gps Horloge, classified under Improper Access Control. CVSS score: 6.8/10. Published 2021-02-01.

How severe is CVE-2019-20473?

Medium severity. CVSS v3 base score is 6.8 out of 10.

Vulnerability in Tk-Star Q90 Junior Gps Horloge

CVE-2019-20473

An issue was discovered on TK-Star Q90 Junior GPS horloge 3.1042.9.8656 devices. Any SIM card used with the device cannot have a PIN configured. If a PIN is configured, the device simply produces a "Remove PIN and restart!" message, and cannot be used. This makes it easier for an attacker to use the SIM card by stealing the device.

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

CVSS v3 metric

CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (31.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · 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)

CWE-284 — Improper Access Control

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-2019-20473?: CVE-2019-20473 is a medium-severity vulnerability in Tk-Star Q90 Junior Gps Horloge, classified under Improper Access Control. CVSS score: 6.8/10. Published 2021-02-01.
How severe is CVE-2019-20473?: Medium severity. CVSS v3 base score is 6.8 out of 10.