CVE-2020-15509: Nordicsemi Android Ble Library

Medium severity, CVSS 6.5. EPSS: 0.5% chance of exploitation in the next 30 days.

Nordic Semiconductor Android BLE Library through 2.2.1 and DFU Library through 1.10.4 for Android (as used by nRF Connect and other applications) can engage in unencrypted communication while showing the user that the communication is purportedly encrypted. The problem is in bond creation (e.g., internalCreateBond in BleManagerHandler).

Affected products

• Nordicsemi Android Ble Library: up to and including 2.2.1
• Nordicsemi Dfu Library: up to and including 1.10.4

Published 2020-07-07. Last modified 2026-06-17.