CVE-2026-45329
HighCVSS 7.1Exploitation Probability (EPSS)
Low risk2th percentile - higher than 2% of all known CVEs
Summary
In Espressif IoT Development Framework (ESP-IDF) versions 5.5.4 and 6.0, several ESP-TEE secure-service wrappers fail to validate all caller-supplied pointer arguments, allowing the REE to read TEE memory. This issue has been fixed in versions 5.5.5 and 6.0.1.
Risk Assessment
An attacker from the REE can read sensitive data from TEE memory, including cryptographic keys and other secrets, breaking hardware isolation.
Recommendation
It is recommended to immediately update ESP-IDF to version 5.5.5 or 6.0.1.
Other vulnerabilities in ESP-IDF
See all- CVE-2026-45328Critical
Espressif IoT Development Framework (ESP-IDF) versions 5.5.4 and 6.0 have a vulnerability in the esp_tee component that exposes secure-service wrappers. An attacker can exploit these wrappers to gain unauthorized access to TEE-protected peripherals.
- CVE-2026-55687High
A vulnerability in the Espressif IoT Development Framework (ESP-IDF) allows an out-of-bounds write on the stack when parsing the DQT marker in JPEG files. An attacker can supply a crafted JPEG image, leading to a denial of service.
- CVE-2026-46532Medium
ESF-IDF (Espressif IoT Development Framework) versions 5.2.6, 5.3.5, 5.4.4, 5.5.3, and 6.0 contain an out-of-bounds read vulnerability in the BlueDroid AVRCP vendor-command parser (avrc_pars_vendor_cmd). Patched in versions 5.2.7, 5.3.6, 5.4.5, 5.5.4, and 6.0.1.
- CVE-2026-45542High
Heap buffer overflow in the protocomm component of the ESP-IDF IoT framework. Occurs during Security Scheme 2 (SRP6a) session setup, where a client-supplied username length is copied into a smaller buffer, corrupting the heap.
- CVE-2026-45541High
In the ESP-IDF Espressif IoT Development Framework, a NULL-pointer dereference exists in the esp_http_server component during WebSocket subprotocol negotiation. The missing NULL check on the tokenization result of the Sec-WebSocket-Protocol header can crash the server before authentication.
- CVE-2026-45160Medium
ESP-IDF (Espressif IoT Development Framework) has an out-of-bounds read vulnerability in the DHCP server option parser in the lwIP component. A crafted DHCP request can cause reads past the buffer into adjacent heap memory.
Original NVD description (English source)
ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In versions 5.5.4 and 6.0, several ESP-TEE secure-service wrappers in esp_secure_services.c and esp_secure_services_iram.c validated only some of the caller-supplied pointer arguments, leaving input pointer arguments unchecked. Because the underlying TEE-protected hardware peripherals (e.g., ECC, SHA, SPI) run in RISC-V machine mode (M-mode) with full address-space access, a caller could supply pointers into TEE-exclusive memory as inputs, causing the peripheral to read TEE memory and return results derived from it to the REE. Depending on the wrapper, the result contains raw bytes from TEE memory, a computed function of TEE memory recoverable through repeated calls, or a single bit per call that forms an oracle for incremental disclosure of TEE-resident sensitive data. This issue has been patched in versions 5.5.5 and 6.0.1.