CVE-2026-77236

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.

CVSS v3 7.3 HIGH

7.3^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.0 / Impact : 4.7

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://aws.amazon.com/security/security-bulletins/2026-086-aws/	Vendor Advisory
https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.1	Release Notes
https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-vq2f-9qj3-jj2m	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:amazon:freertos:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-21 18:16

Updated : 2026-08-25 16:44

NVD link : CVE-2026-77236

Mitre link : CVE-2026-77236

CVE.ORG link : CVE-2026-77236

JSON object : View

Products Affected

amazon

freertos

CWE

CWE-787

Out-of-bounds Write

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