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CVE-2026-45329— ESF-IDF: Out-of-Bounds Read in ESP-TEE Secure Service Wrappers

Quick assessment

Affected
espressif esp-idf
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ESP-IDF是Espressif开源的一个 Windows、Linux 和 macOS 上支持的 Espressif SoC 的开发框架。 ESP-IDF 5.5.4版本和6.0版本存在输入验证错误漏洞，该漏洞源于ESP-TEE安全服务包装器中仅验证部分调用者提供的指针参数，未检查输入指针参数，可能导致调用者提供指向TEE独占内存的指针，使外设读取TEE内存并将结果返回给REE。

CVSS 7.1 · High EPSS 0.17% · P6

Affected Version Matrix 2

VendorProduct Version RangeStatus
espressif esp-idf = 6.0 affected
= 5.5.4 affected
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I. Basic Information for CVE-2026-45329

Vulnerability Information
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Vulnerability Title
ESF-IDF: Out-of-Bounds Read in ESP-TEE Secure Service Wrappers
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
ESP-IDF 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ESP-IDF是Espressif开源的一个 Windows、Linux 和 macOS 上支持的 Espressif SoC 的开发框架。 ESP-IDF 5.5.4版本和6.0版本存在输入验证错误漏洞，该漏洞源于ESP-TEE安全服务包装器中仅验证部分调用者提供的指针参数，未检查输入指针参数，可能导致调用者提供指向TEE独占内存的指针，使外设读取TEE内存并将结果返回给REE。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
espressif esp-idf = 6.0 -

II. Public POCs for CVE-2026-45329

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III. Intelligence Information for CVE-2026-45329

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Patches & Fixes for CVE-2026-45329 (3)

Vendor Advisories for CVE-2026-45329 (1)

Same Patch Batch · espressif · 2026-06-10 · 6 CVEs total

CVE-2026-45328 9.3 CRITICAL ESF-IDF: Out-of-Bounds Write in ESP-TEE Secure Service Wrappers
CVE-2026-45541 7.5 HIGH ESF-IDF: Remote Null Pointer Dereference in WebSocket Server
CVE-2026-45542 7.1 HIGH ESF-IDF: Heap buffer overflow in protocomm Security2 over Bluetooth
CVE-2026-45160 6.5 MEDIUM ESF-IDF: Out-of-bounds Read in lwIP DHCP Server Option Parser
CVE-2026-46532 4.6 MEDIUM ESF-IDF: Heap Out-of-Bounds Read in Bluedroid AVRCP Target Parser

IV. Related Vulnerabilities

Same product: esp-idf
Same vendor: espressif
Same weakness: CWE-20

V. Comments for CVE-2026-45329

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