Out-of-bounds read in ESP-IDF - CVE-2025-66409
Published: December 2, 2025 / Updated: December 26, 2025
Vulnerability identifier: #VU118997
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-66409
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Espressif Systems
Affected software:
ESP-IDF
ESP-IDF
Detailed vulnerability description
The vulnerability allows an attacker to perform a denial of service attack.
The vulnerability exists due to a boundary condition in ESP32 Bluetooth AVRCP command handling. An attacker with physical proximity to device can send a specially crafted VENDOR DEPENDENT command with a buffer shorter than required by the AVRCP protocol, trigger an out-of-bounds read and perform a denial of service attack.
How to mitigate CVE-2025-66409
Install update from vendor's website.