amazon aws CVE-2026-109587 in Amazon and Freertos Products
Published on October 16, 2026

Incorrect authorization in the Arm Cortex-R82 MPU port in FreeRTOS-Kernel

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Incorrect authorization in the Arm Cortex-R82 (Armv8-R AArch64) MPU port in FreeRTOS-Kernel V11.3.0 and V11.3.1 might allow an unprivileged task on MPU-enabled builds to read and write privileged kernel memory outside the regions assigned to it, via a buffer argument passed to an MPU system call. To remediate this issue, users should upgrade to version V11.3.2 or later.

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-109587 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Exploitation:
NONE
Automatable:
NO
Technical Impact:
TOTAL
Attack Vector:
LOCAL
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
CHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is an AuthZ Vulnerability?

The software performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check. This allows attackers to bypass intended access restrictions.

CVE-2026-109587 has been classified to as an AuthZ vulnerability or weakness.


Products Associated with CVE-2026-109587

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Amazon Aws
Freertos Kernel

Affected Versions

FreeRTOS-Kernel: