{"id":"CVE-2026-113780","title":"ESF-IDF: Unvalidated Stack Pointer at the ESP-TEE Privilege-Switch Boundary","summary":"ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. From 5.5.5 until 5.5.6, 6.0.4, and 6.1.1, the esp_tee trap entry in esp_tee_vectors_plic.S and esp_tee_vectors_clic.S saves a caller-controlled register frame throu…","severity":"critical","cvss":9.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-787","CWE-822"],"vendor":"espressif","product":"esp-idf","affected":["esp-idf < 5.5.6","esp-idf >= 6.0.0, < 6.0.4","esp-idf >= 6.1.0, < 6.1.1"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-11-05T19:10:46.416008Z"},"published":"2026-11-04","updated":"2026-11-05","sourceUpdated":"2026-11-05T19:10:59.124Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-113780","references":[{"url":"https://github.com/espressif/esp-idf/security/advisories/GHSA-49x8-xqjg-2pjg","label":"https://github.com/espressif/esp-idf/security/advisories/GHSA-49x8-xqjg-2pjg"},{"url":"https://github.com/espressif/esp-idf/commit/773761abb893d43d0a5b8b75ec0a1c2cf0287d53","label":"https://github.com/espressif/esp-idf/commit/773761abb893d43d0a5b8b75ec0a1c2cf0287d53"},{"url":"https://github.com/espressif/esp-idf/commit/acb7d996b07293abf591b93f4aaffa04ae6732d9","label":"https://github.com/espressif/esp-idf/commit/acb7d996b07293abf591b93f4aaffa04ae6732d9"},{"url":"https://github.com/espressif/esp-idf/commit/b85a7b0e1449ac9aec30a0c3e3b6515725556fd1","label":"https://github.com/espressif/esp-idf/commit/b85a7b0e1449ac9aec30a0c3e3b6515725556fd1"},{"url":"https://github.com/espressif/esp-idf/commit/dabd37fae8d2a7b1cc71f48fce824b0b9d909a07","label":"https://github.com/espressif/esp-idf/commit/dabd37fae8d2a7b1cc71f48fce824b0b9d909a07"},{"url":"https://github.com/espressif/esp-idf/releases/tag/v5.5.6","label":"https://github.com/espressif/esp-idf/releases/tag/v5.5.6"}],"tags":["cve.org"],"epss":0.00141,"epssPercentile":0.03483,"ingestedAt":"2026-11-05T22:38:31.514Z","slug":"CVE-2026-113780","body":"## Overview\n\nESF-IDF is the Espressif Internet of Things (IOT) Development Framework. From 5.5.5 until 5.5.6, 6.0.4, and 6.1.1, the esp_tee trap entry in esp_tee_vectors_plic.S and esp_tee_vectors_clic.S saves a caller-controlled register frame through the REE-supplied stack pointer before switching to the trusted TEE stack or validating the pointer. A local unprivileged REE application can direct this machine-mode write into TEE-exclusive memory on ESP32-C5, ESP32-C6, ESP32-C61, and ESP32-H2 devices, breaking the REE/TEE isolation boundary and potentially corrupting TEE control-flow data for code execution, denial of service, or system crashes. Both secure-service ecall and interrupt entry paths contain the vulnerable ordering. This issue is fixed in version 5.5.6 and is scheduled to be fixed in versions 6.0.4 and 6.1.1.\n\n## Affected\n\n- `esp-idf < 5.5.6`\n- `esp-idf >= 6.0.0, < 6.0.4`\n- `esp-idf >= 6.1.0, < 6.1.1`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":51.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}