CVE-2026-89034TCH QRing R20_B006 Unauthenticated BLE Access
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-306
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
TCH QRing tch:qring (from the name) | RT09R20_1.00.00_250318 | CNA record |
References
- https://mrvar0x.com/2026/05/19/reverse-engineering-hidden-capabilities-in-smart-ring-ecosystems/technical-description
- https://mrvar0x.com/wp-content/uploads/2026/07/Reverse-Engineering-Hidden-Capabilities-in-Smart-Ring-Ecosystems-WhitePaper.pdfexploit
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.