CVE-2026-19774

HIGH 7.1

BlueZ A2DP Stack-based Buffer Overflow Remote Code Execution Vulnerability

CVSS Score

7.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-121
Vendor	bluez
Product	bluez
Published	Sep 15, 2026
Last Updated	Sep 15, 2026

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CVSS v3 Breakdown

CVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Versions

BlueZ / BlueZ

b138a0849ba26310c3f40e78037565ce274d8737

References

NVD ↗ CVE.org ↗ EPSS Data ↗

zerodayinitiative.com: https://www.zerodayinitiative.com/advisories/ZDI-26-589/ github.com: https://github.com/bluez/bluez/pull/2251