CVE-2026-77235

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.

Score

CVSS 4.0 8.3 High

Status

Analyzed - ff89ba41-3aa1-4d27-914a-91399e9639e5

Published

2026-08-21

Last modified

2026-10-14

Weaknesses

CWE-416

Affected products

• Freertos (Amazon)
• Freertos-kernel (Freertos)

References

• https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.1
• https://aws.amazon.com/security/security-bulletins/2026-086-aws/
• https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-55pf-q87x-c58c