Vulnerability Description
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 Score
HIGH
Related Weaknesses (CWE)
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-j
FAQ
What is CVE-2026-77236?
CVE-2026-77236 is a vulnerability with a CVSS score of 7.3 (HIGH). 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 undersize...
How severe is CVE-2026-77236?
CVE-2026-77236 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-77236?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.