CVE-2021-3436: Zephyrproject Zephyr

Medium severity, CVSS 6.5. EPSS: 1% chance of exploitation in the next 30 days.

BT: Possible to overwrite an existing bond during keys distribution phase when the identity address of the bond is known. Zephyr versions >= 1.14.2, >= 2.4.0, >= 2.5.0 contain Use of Multiple Resources with Duplicate Identifier (CWE-694). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-j76f-35mc-4h63

Affected products

• Zephyrproject Zephyr: version 1.14.2 only; version 2.4.0 only; version 2.5.0 only

Published 2021-10-05. Last modified 2026-06-17.