CVE-2023-51596: Bluez

High severity, CVSS 7.1. EPSS: 1.5% chance of exploitation in the next 30 days.

BlueZ Phone Book Access Profile Heap-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of BlueZ. User interaction is required to exploit this vulnerability in that the target must connect to a malicious Bluetooth device. The specific flaw exists within the handling of the Phone Book Access profile. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length heap-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-20939.

Affected products

• Bluez Bluez: version 5.66 only

Published 2024-05-03. Last modified 2026-06-17.