CVE-2020-13593: Ti Simplelink-CC2640R2 Software Development Kit

High severity, CVSS 8.8. EPSS: 0.3% chance of exploitation in the next 30 days.

The Bluetooth Low Energy Secure Manager Protocol (SMP) implementation in Texas Instruments SimpleLink SIMPLELINK-CC2640R2-SDK through 2.2.3 allows the Diffie-Hellman check during the Secure Connection pairing to be skipped if the Link Layer encryption setup is performed earlier. An attacker in radio range can achieve arbitrary read/write access to protected GATT service data, cause a denial of service, or possibly control a device's function by establishing an encrypted session with an unauthenticated Long Term Key (LTK).

Affected products

• Ti Simplelink-CC2640R2 Software Development Kit: up to and including 2.2.3

Published 2020-08-31. Last modified 2026-06-17.