CVE-2026-113780
Received Received - Intake

Memory Corruption in Espressif ESP-IDF Framework

Publication date: 2026-11-04

Last updated on: 2026-11-04

Assigner: GitHub, Inc.

Description
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 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.

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Meta Information

Published
2026-11-04
Last Modified
2026-11-04
Generated
2026-11-04
AI Q&A
2026-11-04
EPSS Evaluated
N/A
NVD
CVE-2026-113780
EUVD
EUVD-2026-117053

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
espressif esp-idf < 5.5.6
espressif esp-idf >= 6.0.0, < 6.0.4
espressif esp-idf >= 6.1.0, < 6.1.1

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-822 The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.
CWE-787 The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

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Executive Summary

This vulnerability affects the Espressif IoT Development Framework (ESP-IDF) versions between 5.5.5 and 5.5.6, 6.0.4, and 6.1.1. It involves a flaw in the esp_tee trap entry code where a register frame controlled by the caller is saved to the REE-supplied stack pointer before validating the pointer or switching to the trusted TEE stack. This allows a local unprivileged application to write into TEE-exclusive memory on certain ESP32 devices, breaking the isolation between the Rich Execution Environment (REE) and Trusted Execution Environment (TEE).

Detection Guidance

Detection requires checking the ESP-IDF version in use. Compare installed versions against affected ranges (5.5.5 to 5.5.6, 6.0.4, 6.1.1). Use commands like 'idf.py --version' or check project CMakeLists.txt for version. Affected devices include ESP32-C5, ESP32-C6, ESP32-C61, and ESP32-H2.

Impact Analysis

This vulnerability can lead to severe impacts such as unauthorized code execution, denial of service, or system crashes on affected ESP32 devices (ESP32-C5, ESP32-C6, ESP32-C61, ESP32-H2). An attacker could exploit this to corrupt TEE control-flow data, potentially gaining elevated privileges or disrupting system operations.

Mitigation Strategies

Upgrade ESP-IDF to fixed versions: 5.5.6 or later, 6.0.4, or 6.1.1. For ESP32-C5, ESP32-C6, ESP32-C61, and ESP32-H2 devices, apply the patch immediately. Avoid using vulnerable versions in production environments until updated.

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