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
| Score | Version | Source | Vector |
|---|---|---|---|
| 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
| Vendor | Product | Versions | Source |
|---|---|---|---|
| espressif | esp-idf | = 5.5.4 | CVEProject cvelistV5 (CNA) |
| espressif | esp-idf | = 6.0 | CVEProject cvelistV5 (CNA) |
References and advisories
7- https://github.com/espressif/esp-idf/security/advisories/GHSA-mmgp-73p4-92xp x_refsource_CONFIRM
- https://github.com/espressif/esp-idf/commit/145ba4c42dc8283054cfde9a1c3470db7399192f x_refsource_MISC
- https://github.com/espressif/esp-idf/commit/440a5d1906502023f2a0fb0aecbdf0602d14acbf x_refsource_MISC
- https://github.com/espressif/esp-idf/commit/764626a1b7c85b943d207da08a2f8f7d7f3def4d x_refsource_MISC
- https://github.com/espressif/esp-idf/commit/7867f4a57560bf9fc4a931e37ba02b7a3e9f406b x_refsource_MISC
- https://github.com/espressif/esp-idf/commit/afd14ab113acd0ca369965404c99ac42e74d4fcd x_refsource_MISC
- https://github.com/espressif/esp-idf/commit/eebabaff2fdc273b1530fe66e55fb3bcd181dfd6 x_refsource_MISC
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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-20Improper Input Validation
- CWE-787Out-of-bounds Write