CVE-2026-45328

HIGH CVSS 3.1: 8.8 EPSS 0.18%
Updated Jul 23, 2026
Espressif
Parameter Value
CVSS 8.8 (HIGH)
Type CWE-20 (Improper Input Validation), CWE-787 (Out-of-bounds Write)
Vendor Espressif
Public PoC No

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.

Attack Parameters

Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Espressif Esp-Idf
cpe:2.3:a:espressif:esp-idf:5.5.4:*:*:*:*:*:*:*
— —
Espressif Esp-Idf
cpe:2.3:a:espressif:esp-idf:6.0:*:*:*:*:*:*:*
— —