High severity · published Sep 15, 2026
CVE-2026-19774
BlueZ A2DP Stack-based Buffer Overflow Remote Code Execution Vulnerability
7.1
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Adjacent
Complexity
High
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 18% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BL
BlueZ · BlueZ
b138a0849ba26310c3f40e78037565ce274d8737 · source: vendor
In the news
VulnerabilityHigh
ZDI-26-589: 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 ZDI has assigned a CVSS rating of 7.1. The following CVEs are assigned: CVE-2026-19774.
Aug 24, 2026·Zero Day Initiative
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-19774
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-19774
github.com
https://github.com/bluez/bluez/pull/2251
www.zerodayinitiative.com
https://www.zerodayinitiative.com/advisories/ZDI-26-589/
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