---
id: CVE-2026-19774
title: BlueZ A2DP Stack-based Buffer Overflow Remote Code Execution Vulnerability
summary: >-
  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 p…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-121
  - CWE-120
vendor: BlueZ
product: BlueZ
affected:
  - BlueZ b138a0849ba26310c3f40e78037565ce274d8737
published: '2026-09-15'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T19:10:46.443'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-19774'
references:
  - url: 'https://github.com/bluez/bluez/pull/2251'
    label: zdi-disclosures@trendmicro.com
  - url: 'https://www.zerodayinitiative.com/advisories/ZDI-26-589/'
    label: zdi-disclosures@trendmicro.com
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-19774.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-19774'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2534102'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-19774'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-19774'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00266
epssPercentile: 0.16519
zeroDay: true
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-15T19:21:01.394488Z'
scores:
  nvd: 7.1
  vendor: 8
ingestedAt: '2026-09-15T18:41:59.189Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, … · updated 2026-09-15 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-19774.json)