CVE-2026-77234: amazon freertos

CVSS 9.3 (critical) · published 2026-08-21

Improper input validation in FreeRTOS-Kernel before 11.3.1 might allow an unprivileged task on MPU-enabled ports to execute code in privileged kernel context. To remediate this issue, users should upgrade to version 11.3.1 or later.

Affected products (NVD): amazon freertos

Fixed in (NVD): 11.3.1

Weakness: CWE-863

Source: NVD CVE-2026-77234

References

• https://aws.amazon.com/security/security-bulletins/2026-086-aws/
• https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.1
• https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-w3vr-pr75-5hc6

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