CVE-2026-19774

HIGH CVSS 3.0: 7.1
Updated Sep 15, 2026
BlueZ
Parameter Value
CVSS 7.1 (HIGH)
Type CWE-121 (Stack-based Buffer Overflow)
Vendor BlueZ
Public PoC No

BlueZ A2DP Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of BlueZ. An attacker must first obtain the ability to pair a malicious Bluetooth device with the target system in order to exploit this vulnerability.

The specific flaw exists within the handling of the stream endpoints. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root.

Was ZDI-CAN-29429.

Attack Parameters

Attack Vector
Adjacent
Requires local network access
Attack Complexity
High
Difficult to exploit
Privileges Required
None
No privileges needed
User Interaction
Required
User action required

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.0