Is CVE-2026-79377 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-79377 being exploited in the wild.

How severe is CVE-2026-79377?

High severity, with a CVSS score of 7.5, published 8 September 2026.

Which products and versions are affected?

Bestechnic BES2300 v3.x and earlier.

Is there a fix for CVE-2026-79377?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-79377 attacked?

It is attacked from the adjacent network, in device firmware.

Am I affected by CVE-2026-79377?

Check whether you run Bestechnic BES2300 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-79377: Bestechnic BES2300 heap overflow in A2DP SBC decoder

CVE-2026-79377 · Severity: high · CVSS 7.5 · Published 2026-09-08

The BES2300 is a Bluetooth audio system-on-chip used in wireless headphones and speakers. A heap overflow vulnerability in its audio decoding component allows an attacker to cause the device to crash or stop responding by sending a specially crafted Bluetooth packet, disrupting service for end users.

Technologies: Bestechnic BES2300. Vendors: Bestechnic.

Quick answers

Is CVE-2026-79377 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-79377 being exploited in the wild.
How severe is CVE-2026-79377?: High severity, with a CVSS score of 7.5, published 8 September 2026.
Which products and versions are affected?: Bestechnic BES2300 v3.x and earlier.
Is there a fix for CVE-2026-79377?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-79377 attacked?: It is attacked from the adjacent network, in device firmware.
Am I affected by CVE-2026-79377?: Check whether you run Bestechnic BES2300 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

A heap buffer overflow exists in the a2dp_decoder_sbc.cpp component of Bestechnic BES2300 firmware v3.x and earlier. The vulnerability is triggered when processing SBC (Sub-Band Coding) audio frames over the L2CAP (Logical Link Control and Adaptation Protocol) layer used for Bluetooth audio streaming. An attacker with network proximity (Bluetooth range) can send a crafted L2CAP packet containing malicious audio data to cause heap memory corruption. This results in a denial of service condition via device crash or hang. The vulnerability requires no authentication and affects the audio decoding path that processes incoming Bluetooth audio streams.

Affected products

Bestechnic BES2300 v3.x and earlier

Timeline

2026-09-08: disclosed

References

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