CVE-2023-4257: Zephyrproject Zephyr

Critical severity, CVSS 9.8. EPSS: 0.9% chance of exploitation in the next 30 days.

Unchecked user input length in /subsys/net/l2/wifi/wifi_shell.c can cause buffer overflows.

Affected products

• Zephyrproject Zephyr: up to and including 3.4.0

Published 2023-10-13. Last modified 2026-06-17.