Summaryinfo

A vulnerability was found in BlueKitchen BTstack up to 1.8.0. It has been classified as problematic. This affects the function LIST_PLAYER_APPLICATION_SETTING_ATTRIBUTES/LIST_PLAYER_APPLICATION_SETTING_VALUES of the component AVRCP Controller. The manipulation of the argument Count leads to out-of-bounds. This vulnerability is documented as CVE-2026-28526. The attack requires being on the local network. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in BlueKitchen BTstack up to 1.8.0 and classified as problematic. This issue affects the function LIST_PLAYER_APPLICATION_SETTING_ATTRIBUTES/LIST_PLAYER_APPLICATION_SETTING_VALUES of the component AVRCP Controller. The manipulation of the argument count with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is availability. The summary by CVE is:

BlueKitchen BTstack versions prior to 1.8.1 contain an out-of-bounds read vulnerability in the AVRCP Controller LIST_PLAYER_APPLICATION_SETTING_ATTRIBUTES and LIST_PLAYER_APPLICATION_SETTING_VALUES handlers that allows attackers to read beyond buffer boundaries. A nearby attacker with a paired Bluetooth Classic connection can send a specially crafted VENDOR_DEPENDENT response with an attacker-controlled count value to trigger an out-of-bounds read from the L2CAP receive buffer, potentially causing a crash on resource-constrained devices.

The weakness was released by Kazuma Matsumoto. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-28526 since 02/27/2026. The exploitation is known to be easy. Access to the local network is required for this attack. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 1.8.1 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-17085). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• BlueKitchen

Name

• BTstack

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8.0

Website

• Product: https://github.com/bluekitchen/btstack/

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