STM32Cube embedded software
The latest STM32Cube embedded software updates help developers start faster on new STM32 devices, reuse ready-to-run examples, and check software security information directly in each package.
The release set includes expanded device support, refreshed middleware, updated examples, and maintenance fixes across the STM32Cube portfolio.
- Bring up new STM32 devices and boards faster
- Add audio to STM32CubeN6 video-encoding applications with OPUS
- Check the security level of STM32Cube software components
What is new in STM32Cube embedded software?
New STM32U3 and STM32H5 product lines
STM32Cube now supports STM32H533/H543, STM32U335xx/STM32U345xx, and STM32U356xx/STM32U366xx devices.
Developers also get BSP support and examples for the STM32U366E-DK discovery kit and NUCLEO-U366RE-Q, NUCLEO-U345RC-Q, and NUCLEO-H533RE boards.
Delivery of OPUS middleware in STM32CubeN6 package
STM32CubeN6 v1.4.0 adds the OPUS open-source middleware stack, helping developers combine H.264 video encoding with optional compressed audio.
Applications can use 1080p, 720p, or 480p H.264 encoding in frame mode or hardware-handshake mode, with optional PCM or OPUS audio.
Security Level indicated for all the software components
Each software component now includes a SW_Security_Level.md file that identifies its security level as Low or Medium.
Overview of the latest embedded software updates
The latest delivery includes nine full packages and five patch updates.
Beyond the highlights above, the packages include:
- Refreshed middleware and connectivity stacks
- Updated drivers, examples, BSPs, and templates
- Maintenance fixes and robustness improvements
See the release notes below for package-level details.
Full package releases
- STM32CubeH5 v1.7.0 - Release Notes
- STM32CubeU3 v1.4.0 - Release Notes
- STM32CubeWBA v1.10.0 - Release Notes
- STM32CubeWB0 v1.5.0 - Release Notes
- STM32CubeWL3 v1.5.0 - Release Notes
- STM32CubeWL v1.6.0 - Release Notes
- STM32CubeN6 v1.4.0 - Release Notes
- STM32CubeU5 v1.9.0 - Release Notes
Patch updates
These packages received maintenance updates, defect fixes, and implementation enhancements:
- STM32CubeG0 v1.6.3 - Release Notes
- STM32CubeWB0 v1.4.1 - Release Notes
- STM32CubeG4 v1.6.3 - Release Notes
- STM32CubeC0 v1.4.1 - Release Notes
- STM32CubeMP2 v1.3.1 - Release Notes
Additional resources
- GitHub for MCU packages
- Developer Zone Embedded Software
- Getting started with STM32Cube embedded software
First published on Aug 24, 2026
