CVE-2025-66409
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-02

Last updated on: 2026-02-13

Assigner: GitHub, Inc.

Description
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.
CVSS Scores
EPSS Scores
Probability:
Percentile:
Meta Information
Published
2025-12-02
Last Modified
2026-02-13
Generated
2026-06-16
AI Q&A
2025-12-02
EPSS Evaluated
2026-06-15
NVD
CVE-2025-66409
EUVD
EUVD-2025-200284
Affected Vendors & Products
Showing 5 associated CPEs
Vendor Product Version / Range
espressif esp-idf From 5.2 (inc) to 5.2.6 (inc)
espressif esp-idf From 5.3 (inc) to 5.3.4 (inc)
espressif esp-idf From 5.4 (inc) to 5.4.3 (inc)
espressif esp-idf From 5.5 (inc) to 5.5.1 (inc)
espressif esp-idf to 5.1.6 (inc)
Helpful Resources
Exploitability
CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-125 The product reads data past the end, or before the beginning, of the intended buffer.
Attack-Flow Graph
AI Quick Actions
Instant insights powered by AI
Executive Summary

This vulnerability occurs in the Espressif Internet of Things Development Framework (ESF-IDF) versions 5.5.1, 5.4.3, 5.3.4, 5.2.6, 5.1.6, and earlier when AVRCP is enabled on ESP32 devices. If the device receives a malformed VENDOR DEPENDENT Bluetooth command from a peer device, the Bluetooth stack may access memory without properly validating the command buffer length. This can lead to an out-of-bounds read, potentially exposing unintended memory content or causing unexpected behavior.

Impact Analysis

The vulnerability can cause the Bluetooth stack on affected ESP32 devices to read memory out-of-bounds when processing malformed commands. This may expose unintended memory content, which could potentially leak sensitive information, or cause unexpected behavior in the device, possibly affecting its stability or security.

Chat Assistant
Ask questions about this CVE
Hi! I’m here to help you understand CVE-2025-66409. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70
EPSS Chart