CVE-2026-45328: CWE-20: Improper Input Validation in espressif esp-idf
A critical improper input validation vulnerability (CWE-20) exists in the esp_tee component of Espressif's esp-idf framework versions 5. 5. 4 and 6. 0. This component bridges calls from user applications to TEE-protected hardware peripherals and security features. The flaw has been patched in versions 5. 5. 5 and 6. 0. 1.
AI Analysis
Technical Summary
CVE-2026-45328 describes an improper input validation vulnerability in the esp_tee component of Espressif's esp-idf framework. The vulnerable versions 5.5.4 and 6.0 expose secure-service wrappers that interface user applications with trusted execution environment (TEE) hardware peripherals and security features such as AES, SHA, ECC, HMAC, SPI, MMU, WDT, attestation, OTA updates, and secure storage. Improper validation of inputs in these wrappers could lead to critical impacts on confidentiality, integrity, and availability. The issue has been addressed by patches in versions 5.5.5 and 6.0.1.
Potential Impact
The vulnerability has a CVSS 3.1 score of 9.3 (critical), indicating that exploitation could result in complete compromise of confidentiality, integrity, and availability of the affected system. Since the esp_tee component controls access to critical hardware security features, improper input validation could allow an attacker with local access to escalate privileges or disrupt secure operations.
Mitigation Recommendations
A fix is available. Users should upgrade esp-idf to versions 5.5.5 or 6.0.1 or later to remediate this vulnerability. No additional mitigation steps are indicated.
CVE-2026-45328: CWE-20: Improper Input Validation in espressif esp-idf
Description
A critical improper input validation vulnerability (CWE-20) exists in the esp_tee component of Espressif's esp-idf framework versions 5. 5. 4 and 6. 0. This component bridges calls from user applications to TEE-protected hardware peripherals and security features. The flaw has been patched in versions 5. 5. 5 and 6. 0. 1.
CVSS v3.1
Score 9.3critical
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-45328 describes an improper input validation vulnerability in the esp_tee component of Espressif's esp-idf framework. The vulnerable versions 5.5.4 and 6.0 expose secure-service wrappers that interface user applications with trusted execution environment (TEE) hardware peripherals and security features such as AES, SHA, ECC, HMAC, SPI, MMU, WDT, attestation, OTA updates, and secure storage. Improper validation of inputs in these wrappers could lead to critical impacts on confidentiality, integrity, and availability. The issue has been addressed by patches in versions 5.5.5 and 6.0.1.
Potential Impact
The vulnerability has a CVSS 3.1 score of 9.3 (critical), indicating that exploitation could result in complete compromise of confidentiality, integrity, and availability of the affected system. Since the esp_tee component controls access to critical hardware security features, improper input validation could allow an attacker with local access to escalate privileges or disrupt secure operations.
Mitigation Recommendations
A fix is available. Users should upgrade esp-idf to versions 5.5.5 or 6.0.1 or later to remediate this vulnerability. No additional mitigation steps are indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-11T20:50:30.540Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a28c09e8dd33fbd85c1ae5c
Added to database: 6/10/2026, 1:40:46 AM
Last enriched: 6/10/2026, 1:56:08 AM
Last updated: 6/10/2026, 3:00:32 AM
Views: 5
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