The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation on Telink…
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation on Telink Semiconductor BLE SDK versions before November 2019 for TLSR8x5x through 3.4.0, TLSR823x through 1.3.0, and TLSR826x through 3.3 devices installs a zero long term key (LTK) if an out-of-order link-layer encryption request is received during Secure Connections pairing. An attacker in radio range can have arbitrary read/write access to protected GATT service data, cause a device crash, or possibly control a device's function by establishing an encrypted session with the zero LTK.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 10
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:telink-semi:tlsr8258_ble_sdk:*:*:*:*:*:*:*:* | up to 3.4.0 | Vulnerable | Telink-semi |
| cpe:2.3:h:telink-semi:tlsr8258:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Telink-semi |
| cpe:2.3:a:telink-semi:tlsr8269_ble_sdk:*:*:*:*:*:*:*:* | up to 3.3 | Vulnerable | Telink-semi |
| cpe:2.3:h:telink-semi:tlsr8269:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Telink-semi |
| cpe:2.3:a:telink-semi:tlsr8253_ble_sdk:*:*:*:*:*:*:*:* | up to 3.4.0 | Vulnerable | Telink-semi |
| cpe:2.3:h:telink-semi:tlsr8253:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Telink-semi |
| cpe:2.3:a:telink-semi:tlsr8251_ble_sdk:*:*:*:*:*:*:*:* | up to 3.4.0 | Vulnerable | Telink-semi |
| cpe:2.3:h:telink-semi:tlsr8251:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Telink-semi |
| cpe:2.3:a:telink-semi:tlsr8232_ble_sdk:*:*:*:*:*:*:*:* | up to 1.3.0 | Vulnerable | Telink-semi |
| cpe:2.3:h:telink-semi:tlsr8232:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Telink-semi |
- cpe:2.3:a:telink-semi:tlsr8258_ble_sdk:*:*:*:*:*:*:*:* Versions up to 3.4.0 Vulnerable ·Telink-semi
- cpe:2.3:h:telink-semi:tlsr8258:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Telink-semi
- cpe:2.3:a:telink-semi:tlsr8269_ble_sdk:*:*:*:*:*:*:*:* Versions up to 3.3 Vulnerable ·Telink-semi
- cpe:2.3:h:telink-semi:tlsr8269:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Telink-semi
- cpe:2.3:a:telink-semi:tlsr8253_ble_sdk:*:*:*:*:*:*:*:* Versions up to 3.4.0 Vulnerable ·Telink-semi
- cpe:2.3:h:telink-semi:tlsr8253:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Telink-semi
- cpe:2.3:a:telink-semi:tlsr8251_ble_sdk:*:*:*:*:*:*:*:* Versions up to 3.4.0 Vulnerable ·Telink-semi
- cpe:2.3:h:telink-semi:tlsr8251:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Telink-semi
- cpe:2.3:a:telink-semi:tlsr8232_ble_sdk:*:*:*:*:*:*:*:* Versions up to 1.3.0 Vulnerable ·Telink-semi
- cpe:2.3:h:telink-semi:tlsr8232:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Telink-semi
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2019-19194
- 2026-10-03 Alias added: GHSA-98r9-mgjw-46jp
References
More Telink-semi Tlsr8232 Ble Sdk vulnerabilities
- TI-2019-13830 The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation on Telink… CVSS 3.1MEDIUM 6.5
Sources
- CVE-2019-19194 · CVE Program
- CVE-2019-19194 · NVD
- FIRST EPSS
- GHSA-98r9-mgjw-46jp · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences