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CVE-2026-77235 Details
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.
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 27, 2026Exploitation: NoneAutomatable: NoTechnical Impact: Partial
References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| 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-55pf-q87x-c58c | AMZN | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-416 | Use After Free | 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 27, 2026 | CVE Modified | AMZN |
| Aug 27, 2026 | CVE Modified | CISA-ADP |
| Aug 25, 2026 | Initial Analysis | [email protected] |
| Aug 21, 2026 | CVE Modified | AMZN |
| Aug 21, 2026 | New CVE Received | AMZN |