CVE-2023-1902: Zephyrproject Zephyr

High severity, CVSS 8.0. EPSS: 0.6% chance of exploitation in the next 30 days.

The bluetooth HCI host layer logic not clearing a global reference to a state pointer after handling connection events may allow a malicious HCI Controller to cause the use of a dangling reference in the host layer, leading to a crash (DoS) or potential RCE on the Host layer.

Affected products

• Zephyrproject Zephyr: up to and including 3.3.0

Published 2023-07-10. Last modified 2026-06-17.