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CVE-2026-45328— ESF-IDF: Out-of-Bounds Write 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组件中安全服务包装器问题，可能导致用户应用程序调用TEE保护的外设时存在未授权访问风险。

CVSS 9.3 · Critical EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
espressif esp-idf = 5.5.4 affected
= 6.0 affected
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I. Basic Information for CVE-2026-45328

Vulnerability Information
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Vulnerability Title
ESF-IDF: Out-of-Bounds Write 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, the esp_tee component exposes secure-service wrappers in esp_secure_services.c and esp_secure_services_iram.c that bridge calls from the user application (i.e. the REE) to TEE-protected hardware peripherals (AES, SHA, ECC, HMAC, SPI, MMU, WDT) and to the security feature like attestation, OTA updates, secure storage. 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:H/A:H
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组件中安全服务包装器问题，可能导致用户应用程序调用TEE保护的外设时存在未授权访问风险。
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 = 5.5.4 -

II. Public POCs for CVE-2026-45328

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III. Intelligence Information for CVE-2026-45328

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Patches & Fixes for CVE-2026-45328 (6)

Vendor Advisories for CVE-2026-45328 (1)

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

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-2026-45329 7.1 HIGH ESF-IDF: Out-of-Bounds Read in ESP-TEE Secure Service Wrappers
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-2026-45328

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