CVE-2021-3431: Zephyrproject Zephyr

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

Assertion reachable with repeated LL_FEATURE_REQ. Zephyr versions >= v2.5.0 contain Reachable Assertion (CWE-617). For more information, see https://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-7548-5m6f-mqv9

Affected products

• Zephyrproject Zephyr: from 2.5.0, before 2.6.0 (fixed in 2.6.0)

Published 2022-06-28. Last modified 2026-06-17.