CVE-2026-89034 (GCVE-0-2026-89034)

Vulnerability from cvelistv5 – Published: 2026-09-16 21:43 – Updated: 2026-09-19 02:00
VLAI
Title
TCH QRing R20_B006 Unauthenticated BLE Access
Summary
TCH QRing smart ring model R20_B006 running firmware RT09R20_1.00.00_250318 contains an unauthenticated Bluetooth Low Energy access vulnerability that allows any nearby attacker to connect to the device without pairing, authentication, or user approval by exploiting the exposed Nordic UART Service which enforces no client authentication or command authorization. Attackers within Bluetooth Low Energy range can connect directly to the ring, bypassing the official application and cloud authentication, to read battery levels, activate live heart rate monitoring, and retrieve stored historical heart rate and blood oxygen records.
Severity
7.1 (High)
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-19 01:59 UTC
CWE
  • CWE-306 - Missing Authentication for Critical Function
Assigner
References
Impacted products
Vendor Product Version CPE status
TCH QRing Affected: RT09R20_1.00.00_250318 (custom)
guessed Create a notification for this product.
Date Public
2026-05-19 00:00
Credits
Yehia Elghaly (Mrvar0x)
Show details on NVD website
To clipboard 

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