CVE-2025-9558: Zephyrproject-Rtos Zephyr

High severity, CVSS 7.6. EPSS: 0.2% chance of exploitation in the next 30 days.

There is a potential OOB Write vulnerability in the gen_prov_start function in pb_adv.c. The full length of the received data is copied into the link.rx.buf receiver buffer without any validation on the data size.

Affected products

• Zephyrproject-Rtos Zephyr

Published 2025-11-26. Last modified 2026-06-17.