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CVE-2026-77236 Details
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.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Aug 21, 2026Exploitation: NoneAutomatable: NoTechnical Impact: Partial
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://aws.amazon.com/security/security-bulletins/2026-086-aws/ | AMZN | Vendor Advisory |
| https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.1 | AMZN | Release Notes |
| https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-vq2f-9qj3-jj2m | AMZN | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-787 | Out-of-bounds Write | AMZN |
Affected Products
| Product | Versions |
|---|---|
| amazon freertos | >= 10.2.0, < 11.3.1 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 25, 2026 | Initial Analysis | [email protected] |
| Aug 21, 2026 | CVE Modified | AMZN |
| Aug 21, 2026 | CVE Modified | CISA-ADP |
| Aug 21, 2026 | CVE Modified | AMZN |
| Aug 21, 2026 | New CVE Received | AMZN |