CVE-2026-28526

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.

Score

CVSS 3.1 5.7 Medium

Status

Analyzed - disclosure@vulncheck.com

Published

2026-03-30

Last modified

2026-07-14

Weaknesses

CWE-125

Affected products

• Btstack (Bluekitchen-gmbh)
• Btstack (Bluekitchen Gmbh)

References

• https://github.com/bluekitchen/btstack/releases/tag/v1.8.1
• https://www.vulncheck.com/advisories/bluekitchen-btstack-avrcp-controller-list-player-application-setting-handlers-oob-…