Heap Overflow in BES2300 Bluetooth Audio SoC Firmware

Publication date: 2026-09-08

Last updated on: 2026-09-08

Assigner: MITRE

Description

A heap overflow in the a2dp_decoder_sbc.cpp component of Bestechnic Co., Ltd BES2300 Bluetooth Audio SoC firmware v3.x and earlier allows attackers to cause a Denial of Service (DoS) via sending a crafted L2CAP packet.

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-09-08

Last Modified

2026-09-08

Generated

2026-09-29

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-79377

Affected Vendors & Products

Vendor	Product	Version / Range
bestechnic_co_ltd	bes2300_bluetooth_audio_soc_firmware	to 4.0.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-122	A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

Attack-Flow Graph

Executive Summary

CVE-2026-79377 is a heap overflow vulnerability in the BES2300 Bluetooth Audio SoC firmware affecting the AVCTP layer. It involves a buffer overflow in the reassembly handler due to a fixed-size array without proper bounds checking. Attackers within Bluetooth range can send crafted fragments causing memory corruption or denial of service.

Impact Analysis

This vulnerability allows attackers within Bluetooth range to cause denial of service or potentially execute remote code on affected devices. It could lead to system crashes, memory corruption, or unauthorized access if exploited.

Mitigation Strategies

Upgrade the BES2300 Bluetooth Audio SoC firmware to version v5.0 / RC06 or later to address the vulnerability. If upgrading is not immediately possible, apply the reference patch patch_1.3_avctp.diff as a temporary measure.

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