CVE-2026-45328: Espressif Esp-Idf

High severity, CVSS 8.8. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Espressif Esp-Idf: version 5.5.4 only; version 6.0 only

Published 2026-06-10. Last modified 2026-07-23.