CVE-2026-45328 (GCVE-0-2026-45328)
Vulnerability from cvelistv5 – Published: 2026-06-10 00:33 – Updated: 2026-06-10 13:00
VLAI
EPSS
VEX
Title
ESF-IDF: Out-of-Bounds Write in ESP-TEE Secure Service Wrappers
Summary
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.
Severity
9.3 (Critical)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
7 references
| URL | Tags |
|---|---|
| https://github.com/espressif/esp-idf/security/adv… | x_refsource_CONFIRM |
| https://github.com/espressif/esp-idf/commit/145ba… | x_refsource_MISC |
| https://github.com/espressif/esp-idf/commit/440a5… | x_refsource_MISC |
| https://github.com/espressif/esp-idf/commit/76462… | x_refsource_MISC |
| https://github.com/espressif/esp-idf/commit/7867f… | x_refsource_MISC |
| https://github.com/espressif/esp-idf/commit/afd14… | x_refsource_MISC |
| https://github.com/espressif/esp-idf/commit/eebab… | x_refsource_MISC |
Impacted products
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{
"name": "https://github.com/espressif/esp-idf/commit/7867f4a57560bf9fc4a931e37ba02b7a3e9f406b",
"tags": [
"x_refsource_MISC"
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"url": "https://github.com/espressif/esp-idf/commit/7867f4a57560bf9fc4a931e37ba02b7a3e9f406b"
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"tags": [
"x_refsource_MISC"
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"url": "https://github.com/espressif/esp-idf/commit/afd14ab113acd0ca369965404c99ac42e74d4fcd"
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"source": {
"advisory": "GHSA-mmgp-73p4-92xp",
"discovery": "UNKNOWN"
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"title": "ESF-IDF: Out-of-Bounds Write in ESP-TEE Secure Service Wrappers"
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"date": "2026-08-04",
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"id": "CVE-2026-45328",
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"source": "Red Hat CSAF VEX",
"status": "final",
"title": "ESF-IDF: Out-of-Bounds Write in ESP-TEE Secure Service Wrappers",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45328.json",
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"vulnrichment": {
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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