CVE-2026-80186 — HIGH (7.6)

Vulnerability 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 Score

7.6

HIGH

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

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

LOW

Availability

HIGH

Related Weaknesses (CWE)

CWE-120

References

FAQ

What is CVE-2026-80186?

CVE-2026-80186 is a vulnerability with a CVSS score of 7.6 (HIGH). 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)...

How severe is CVE-2026-80186?

CVE-2026-80186 has been rated HIGH with a CVSS base score of 7.6/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-80186?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.