High severity7.3NVD Advisory· Published Aug 21, 2026· Updated Aug 27, 2026
CVE-2026-77235
CVE-2026-77235
Description
Missing privilege verification in the secure context cleanup handler in FreeRTOS-Kernel before 11.3.1 might allow local users to cause a use-after-free condition in secure-world memory via the SVC handler for secure context deallocation. 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-55pf-q87x-c58cnvdVendor Advisory
- github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.1nvdRelease Notes
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