{"id":"CVE-2026-77235","title":"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.…","summary":"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.…","severity":"high","cvss":7.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H","cwe":["CWE-416"],"vendor":"amazon","product":"freertos","affected":["freertos >= 10.2.0, < 11.3.1"],"patched":["freertos 11.3.1"],"published":"2026-08-21","updated":"2026-10-14","sourceUpdated":"2026-10-14T19:10:00.297","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77235","references":[{"url":"https://aws.amazon.com/security/security-bulletins/2026-086-aws/","label":"ff89ba41-3aa1-4d27-914a-91399e9639e5"},{"url":"https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.1","label":"ff89ba41-3aa1-4d27-914a-91399e9639e5"},{"url":"https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-55pf-q87x-c58c","label":"ff89ba41-3aa1-4d27-914a-91399e9639e5"}],"tags":["nvd"],"epss":0.00157,"epssPercentile":0.04379,"ingestedAt":"2026-10-14T19:49:57.564Z","slug":"CVE-2026-77235","body":"## Overview\n\nMissing 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.\n\n## Affected\n\n- `freertos >= 10.2.0, < 11.3.1`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `freertos 11.3.1`","depth":"twilight","depthScore":40,"depthScoreParts":{"impact":40.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}