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.
- Published Aug 21, 2026
- CVSS 8.3 high
- 0.2% chance of exploitation in the next 30 days (EPSS)
- A fix is available
Affected software
In the news
- Issue with FreeRTOS-Kernel - CVE-2026-77234, CVE-2026-77235, CVE-2026-77236, CVE-2026-77237 AWS Security Bulletins ·