HOMEVULNERABILITIESCVE-2019-20471
HIGH

CVE-2019-20471

CWE-798Published: February 1, 2021· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

An issue was discovered on TK-Star Q90 Junior GPS horloge 3.1042.9.8656 devices. When using the device at initial setup, a default password is used (123456) for administrative purposes. There is no prompt to change this password. Note that this password can be used in combination with CVE-2019-20470.

NVD Source

Technical Analysis

CVE-2019-20471 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

tk-star2 product(s)
q90 junior gps horloge firmwareq90 junior gps horloge
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.eurofins-cybersecurity.com/news/connected-devices-smart-watches/
ADVISORYhttps://www.tk-star.com
ADVISORYhttps://www.eurofins-cybersecurity.com/news/connected-devices-smart-watches/
ADVISORYhttps://www.tk-star.com

All References (6)

→
http://seclists.org/fulldisclosure/2024/Jul/14
→
https://www.eurofins-cybersecurity.com/news/connected-devices-smart-watches/Third Party Advisory
→
https://www.tk-star.comVendor Advisory
→
http://seclists.org/fulldisclosure/2024/Jul/14
→
https://www.eurofins-cybersecurity.com/news/connected-devices-smart-watches/Third Party Advisory
→
https://www.tk-star.comVendor Advisory

Quick Facts

CVE IDCVE-2019-20471
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-798
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 1, 2021

Related CVEs (CWE-798)

CVE-2007-1063
10.0
CVE-2012-6428
10.0
CVE-2026-13768
10.0
CVE-2025-7503
10.0
CVE-2021-40422
10.0
CVE-2018-0222
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-20471 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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