# CVE-2026-93015: BlueKitchen BTstack A2DP endpoint discovery buffer overflow

Source: https://junglewise.ai/threats/cve-2026-93015-bluekitchen-btstack-a2dp-endpoint-discovery-buffer-overflow  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-17. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2026-93015 · Severity: medium · CVSS 6.3 · Published 2026-09-17

BlueKitchen BTstack is a Bluetooth stack used in embedded systems and IoT devices. A vulnerability in A2DP stream endpoint discovery allows a paired Bluetooth device to send malformed discovery responses that trigger out-of-bounds memory writes, potentially corrupting system data structures and causing the application to crash or experience event delivery failures.

## Quick answers

**Is CVE-2026-93015 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-93015 being exploited in the wild.

**How severe is CVE-2026-93015?** Medium severity, with a CVSS score of 6.3, published 17 September 2026.

**Which products and versions are affected?** BlueKitchen BTstack through 1.8.2.

**Is there a fix for CVE-2026-93015?** 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-2026-93015 attacked?** It is attacked from the adjacent network, in a software library.

**Am I affected by CVE-2026-93015?** Check whether anything you run is named in the advisory. 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

The vulnerability is a classic buffer overflow in A2DP stream endpoint discovery. The vulnerable component in src/classic/a2dp.c fails to validate the peer-reported endpoint count against a fixed-size table before processing an AVDTP DISCOVER response. An attacker controlling a bonded peer device can craft a response containing more endpoints than the static table allocates, leading to out-of-bounds writes that corrupt adjacent static objects in memory. This requires prior pairing/bonding (authentication) but no further user interaction. An attacker can crash the process or disrupt Bluetooth event delivery.

## Affected products

- BlueKitchen BTstack through 1.8.2

## Timeline

- 2026-09-17: disclosed

## References

- [https://github.com/bluekitchen/btstack](https://github.com/bluekitchen/btstack)
- [https://github.com/bluekitchen/btstack/blob/v1.8.2/src/classic/a2dp.c](https://github.com/bluekitchen/btstack/blob/v1.8.2/src/classic/a2dp.c)