Download FreeRTOS

Quality RTOS & Embedded Software

FreeRTOS Roadmap and Code Contribution process.
OPC-UA over TSN with FreeRTOS.
FreeRTOS-Plus-TCP now has unified IPv4 and IPv6 functionalities and multi-interface support.
Achieving Unbrickable MCU FOTA for your FreeRTOS-powered Firmware:
FreeRTOS 202012 LTS end of support announced.

Security Vulnerabilities

Security Updates

The table below lists FreeRTOS security updates in the last three years, and the corresponding Common Vulnerabilities and Exposures (CVE) numbers. To report a security issue, please visit Vulnerability Reporting for AWS.

Security issues
Date Created Severity FreeRTOS Library CVE Minimum Patched Version
07/13/2023 High FreeRTOS Kernel Enhancements only FreeRTOS Kernel V10.6.0
09/16/2022 High FreeRTOS Kernel (MPU ports only) Enhancements only FreeRTOS Kernel V10.5.0
09/10/2021 High FreeRTOS+TCP Enhancements only FreeRTOS-Plus-TCP V2.3.4 FreeRTOS-Plus-TCP V2.3.2-LTS-Patch-2
11/17/2021 High FreeRTOS Kernel CVE-2021-43997 FreeRTOS Kernel v10.4.6‡,   FreeRTOS Kernel v10.4.3-LTS-Patch-2
05/03/2021 Critical FreeRTOS Kernel CVE-2021-32020 FreeRTOS Kernel v10.4.3
04/22/2021 Critical FreeRTOS Kernel CVE-2021-31572 FreeRTOS Kernel v10.4.3
04/22/2021 Critical FreeRTOS Kernel CVE-2021-31571 FreeRTOS Kernel v10.4.3

†All versions of FreeRTOS Kernel up to (excluding) v10.4.3

‡FreeRTOS Kernel versions from (including) 10.2.0 up to 10.4.6 (excluding)

Copyright (C) Amazon Web Services, Inc. or its affiliates. All rights reserved.