CVE-2026-45328 CRITICAL

CVE-2026-45328: ESF-IDF: Out-of-Bounds Write in ESP-TEE Secure Service Wrappers

Vendor Espressif
Product esp-idf
Weakness CWE-20 · Input validation
Published June 10, 2026
Last update June 10, 2026
View on NVD All CVEs

CVSS base score

9.3/10
Attack vector Local
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

June 10, 2026 CVE published
June 10, 2026 Record updated