Vulnerability details

CVE-2026-45328

espressif esp-idf

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

CVSS 3.1
9.3Critical

Official 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.

CVSS scores

ScoreVersionSourceVector
9.3Critical 3.1 CVEProject cvelistV5 (CNA) (GitHub_M) CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

VendorProductVersionsSource
espressif esp-idf = 5.5.4 CVEProject cvelistV5 (CNA)
espressif esp-idf = 6.0 CVEProject cvelistV5 (CNA)

References and advisories

7
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Details

Published
2026-06-10
Last updated
2026-06-10
State
Published
Assigner (CNA)
GitHub_M

Exploit prediction (EPSS)

0.12%
Probability of exploitation in 30 days
2.3%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
None
Technical impact
Total

Weaknesses (CWE)

  • CWE-20
    Improper Input Validation
  • CWE-787
    Out-of-bounds Write