CVE-2026-19774

BlueZ A2DP Stack-based Buffer Overflow Remote Code Execution Vulnerability

HIGH
7.1
CVSS Score
Published: September 15, 2026 at 06:01 PM UTC
Updated: September 18, 2026 at 07:29 PM UTC
1 product affected across 1 vendorBlueZ

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Severity
HIGH7.1
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

b138a0849ba26310c3f40e78037565ce274d8737

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory
Source: cverecord
https://github.com/bluez/bluez/pull/2251

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHzdi
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-121

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