Vulnerability Description
Missing privilege verification in the secure context cleanup handler in FreeRTOS-Kernel before 11.3.1 might allow local users to cause a use-after-free condition in secure-world memory via the SVC handler for secure context deallocation. 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-55pf-q87x-c
FAQ
What is CVE-2026-77235?
CVE-2026-77235 is a vulnerability with a CVSS score of 7.3 (HIGH). Missing privilege verification in the secure context cleanup handler in FreeRTOS-Kernel before 11.3.1 might allow local users to cause a use-after-free condition in secure-world memory via the SVC han...
How severe is CVE-2026-77235?
CVE-2026-77235 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-2026-77235?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.