CVE-2026-45328

CRITICAL 9.3

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

CVSS Score

9.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-20 CWE-787
Vendor	espressif
Product	esp-idf
Published	Jun 10, 2026

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CVSS v3 Breakdown

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

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

espressif / esp-idf

= 5.5.4 = 6.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/espressif/esp-idf/security/advisories/GHSA-mmgp-73p4-92xp github.com: https://github.com/espressif/esp-idf/commit/145ba4c42dc8283054cfde9a1c3470db7399192f github.com: https://github.com/espressif/esp-idf/commit/440a5d1906502023f2a0fb0aecbdf0602d14acbf github.com: https://github.com/espressif/esp-idf/commit/764626a1b7c85b943d207da08a2f8f7d7f3def4d github.com: https://github.com/espressif/esp-idf/commit/7867f4a57560bf9fc4a931e37ba02b7a3e9f406b github.com: https://github.com/espressif/esp-idf/commit/afd14ab113acd0ca369965404c99ac42e74d4fcd github.com: https://github.com/espressif/esp-idf/commit/eebabaff2fdc273b1530fe66e55fb3bcd181dfd6