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CVE-2025-66409

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Date: December 2, 2025

ESF-IDF is the Espressif Internet of Things (IOT) Development Framework. In 5.5.1, 5.4.3, 5.3.4, 5.2.6, 5.1.6, and earlier, when AVRCP is enabled on ESP32, receiving a malformed VENDOR DEPENDENT command from a peer device can cause the Bluetooth stack to access memory before validating the command buffer length. This may lead to an out-of-bounds read, potentially exposing unintended memory content or causing unexpected behavior.

Severity Score

Related Resources (9)

https://nvd.nist.gov/vuln/detail/CVE-2025-66409
https://github.com/espressif/esp-idf/commit/d5db5f60fc1dcfdd8cd3ee898fdefaa272988ace
https://github.com/espressif/esp-idf/commit/999710fccf95ae128fe51b5679d6b7c75c50d902
https://github.com/espressif/esp-idf/commit/075ed218cadb8088155521cd8a795d8a626519fb
https://github.com/espressif/esp-idf/commit/daeeba230327176b9627b1caa94acdc54065c4b7
https://github.com/espressif/esp-idf/commit/2f788e59ee361eee230879ae2ec9cf5c893fe372
https://github.com/espressif/esp-idf/commit/798029129a71c802cff0e75eb59f902bca8f1946
https://github.com/espressif/esp-idf/security/advisories/GHSA-qhf9-vr2h-jh96
https://www.mend.io/vulnerability-database/CVE-2025-66409

Severity Score

Weakness Type (CWE)

Out-of-bounds Read

CWE-125

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): NONE
Availability (A): LOW

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