CVE-2026-77236

EUVD-2026-64017
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.3 HIGH
LOCAL
LOW
LOW
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 4.71%
Affected Products (NVD)
VendorProductVersion
amazonfreertos
10.2.0 ≤
𝑥
< 11.3.1
𝑥
= Vulnerable software versions
Common Weakness Enumeration
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-vq2f-9qj3-jj2m