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-…

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Aug 21, 2026 · NIST NVD

   Detected

   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.

2. Oct 14, 2026 · NIST NVD

   Updated

   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.

Affected

• cpe amazon/freertosversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-77236

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2026-77236

  30-day exploitation probability 0.2%

  first.org
• NIST NVDVulnerability recordCVE-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

  nvd.nist.gov

References

• Vendor Advisory · aws.amazon.com
• Release Notes · github.com
• Vendor Advisory · github.com