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CVE-2026-45328

9.3 · CRITICAL

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework.

Published Jun 10, 2026CWE-20EPSS 0.18%

Overview

CVE-2026-45328 is a critical-severity vulnerability. It was published on June 10, 2026 and has a CVSS 3.1 base score of 9.3 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.3, rated CRITICAL. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/espressif/esp-idf/commit/145ba4c42dc8283054cfde9a1c3470db7399192fGitHubgithub.com/espressif/esp-idf/commit/440a5d1906502023f2a0fb0aecbdf0602d14acbfGitHubgithub.com/espressif/esp-idf/commit/764626a1b7c85b943d207da08a2f8f7d7f3def4dGitHubgithub.com/espressif/esp-idf/commit/7867f4a57560bf9fc4a931e37ba02b7a3e9f406bGitHubgithub.com/espressif/esp-idf/commit/afd14ab113acd0ca369965404c99ac42e74d4fcdGitHubgithub.com/espressif/esp-idf/commit/eebabaff2fdc273b1530fe66e55fb3bcd181dfd6GitHubgithub.com/espressif/esp-idf/security/advisories/GHSA-mmgp-73p4-92xp

How CyberStrike helps

Frequently asked questions

What is CVE-2026-45328?

CVE-2026-45328 is a critical-severity vulnerability. It was published on June 10, 2026 and has a CVSS 3.1 base score of 9.3 (CRITICAL).

How severe is CVE-2026-45328?

This vulnerability has a CVSS 3.1 base score of 9.3, rated CRITICAL. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-45328?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-45328?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-45328 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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