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CVE-2026-89034— TCH QRing R20_B006 Unauthenticated BLE Access

Quick assessment

Affected
TCH QRing
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

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 expl

CVSS 6.5 · Medium

Possible ATT&CK Techniques 1 AI

T1597.002 · Purchase Technical Data
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I. Basic Information for CVE-2026-89034

Vulnerability Information
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Vulnerability Title
TCH QRing R20_B006 Unauthenticated BLE Access
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
TCH QRing RT09R20_1.00.00_250318 -

II. Public POCs for CVE-2026-89034

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III. Intelligence Information for CVE-2026-89034

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Other References for CVE-2026-89034 (2)

IV. Related Vulnerabilities

Same weakness: CWE-306

V. Comments for CVE-2026-89034

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