High severity7.3NVD Advisory· Published Aug 21, 2026· Updated Aug 25, 2026
CVE-2026-77236
CVE-2026-77236
Description
Missing minimum size validation in secure context allocation in FreeRTOS-Kernel before 11.3.1 might allow local users to corrupt secure-world heap metadata via an out-of-bounds write with an undersized stack size parameter. To remediate this issue, users should upgrade to version 11.3.1 or later.
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Affected products
1- Range: <11.3.1
Patches
Vulnerability mechanics
References
3- aws.amazon.com/security/security-bulletins/2026-086-aws/nvdVendor Advisory
- github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-vq2f-9qj3-jj2mnvdVendor Advisory
- github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.1nvdRelease Notes
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