CVE-2018-16523: Amazon Web Services Freertos

High severity, CVSS 7.4. EPSS: 2% chance of exploitation in the next 30 days.

Amazon Web Services (AWS) FreeRTOS through 1.3.1, FreeRTOS up to V10.0.1 (with FreeRTOS+TCP), and WITTENSTEIN WHIS Connect middleware TCP/IP component allow division by zero in prvCheckOptions.

Affected products

• Amazon Amazon Web Services Freertos: up to and including 1.3.1
• Amazon Freertos: up to and including 10.0.1

Published 2018-12-06. Last modified 2026-06-17.