CVE-2019-19194 - CVE House
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Status published High CVE-2019-19194

The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation on...

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

More from telink-semi

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CVE-2019-19196
The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation on...
Medium 6.5

Affected Vendor

telink-semi

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Affected Software

tlsr8258 ble sdk, tlsr8269 ble sdk, tlsr8253 ble sdk, tlsr8251 ble sdk, tlsr8232 ble sdk
Vulnerable Versions:
0

Timeline

Official Publish: February 12th, 2020
Last Modified: August 5th, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.