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CVE-2026-19774— BlueZ A2DP Stack-based Buffer Overflow Remote Code Execution Vulnerability

Quick assessment

Affected
BlueZ BlueZ
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

这段文本描述的是一个 BlueZ 蓝牙协议栈中的安全漏洞。以下是专业且准确的中文翻译： BlueZ A2DP 协议栈基于栈的缓冲区溢出导致的远程代码执行漏洞 该漏洞允许处于网络相邻位置的攻击者在受影响的 BlueZ 安装环境中执行任意代码。为了利用此漏洞，攻击者必须首先能够将一个恶意的蓝牙设备与目标系统进行配对。 具体的缺陷存在于流端点（stream endpoints）的处理逻辑中。该问题源于在将用户提供的数据复制到固定长度的栈缓冲区之前，未对数据长度进行适当校验。攻击者可利用此漏洞在 root 用户上下文中执行

AI Predicted 8.6 Difficulty: Moderate

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 1

VendorProduct Version RangeStatus
BlueZ BlueZ b138a0849ba26310c3f40e78037565ce274d8737 affected
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I. Basic Information for CVE-2026-19774

Vulnerability Information
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Vulnerability Title
BlueZ A2DP Stack-based Buffer Overflow Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
BlueZ BlueZ b138a0849ba26310c3f40e78037565ce274d8737 -

II. Public POCs for CVE-2026-19774

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III. Intelligence Information for CVE-2026-19774

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Patches & Fixes for CVE-2026-19774 (1)

Vendor Advisories for CVE-2026-19774 (1)

IV. Related Vulnerabilities

Same product: BlueZ
Same vendor: BlueZ
Same weakness: CWE-121

V. Comments for CVE-2026-19774

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