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Vulnerability record · CVE-2026-80186 · published 25 August 2026

CVE-2026-80186: Classic buffer overflow vulnerability

A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This vulnerability can lead to a Denial of Service (DoS) by crashing the bluetoothd service and may allow for arbitrary code execution.

7.6 CVSS 3.1 High EPSS 0.50% · top 59.6% CWE-120 · Classic buffer overflow Awaiting Analysis
7.6CVSS 3.1 base score
0.50%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
28 Aug 2026Last modified by NVD

Description

A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This vulnerability can lead to a Denial of Service (DoS) by crashing the bluetoothd service and may allow for arbitrary code execution.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

References

LinkTags
https://access.redhat.com/security/cve/CVE-2026-80186
https://bugzilla.redhat.com/show_bug.cgi?id=2524132
https://github.com/bluez/bluez/security/advisories/GHSA-68h6-5qgp-3975

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Source: NIST National Vulnerability Database (record CVE-2026-80186), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.