CVE-2026-28526
LowCVSS 3.5Exploitation Probability (EPSS)
Low risk4th percentile - higher than 4% of all known CVEs
Summary
A vulnerability in BTstack prior to version 1.8.1 allows an out-of-bounds read in the AVRCP LIST_PLAYER_APPLICATION_SETTING_ATTRIBUTES and LIST_PLAYER_APPLICATION_SETTING_VALUES handlers. An attacker with a paired Bluetooth Classic connection can send a crafted VENDOR_DEPENDENT response with a controlled count value to trigger an out-of-bounds read from the L2CAP receive buffer, potentially causing a crash on resource-constrained devices.
Risk Assessment
The risk is that a nearby attacker can remotely crash the device via Bluetooth, disrupting IoT or embedded systems relying on BTstack.
Recommendation
Immediately update BTstack to version 1.8.1 or later, which includes a fix for this vulnerability.
Original NVD description (English source)
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.