CVE-2025-3885 MEDIUM

CVE-2025-3885: Harman Becker MGU21 Bluetooth Improper Input Validation Denial-of-Service Vulnerability

Vendor Harman Becker
Product MGU21
Weakness CWE-20 · Input validation
Published May 22, 2025
Last update May 22, 2025

CVSS base score

5.3/10
Attack vector Adjacent
Attack complexity High
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Harman Becker MGU21 Bluetooth Improper Input Validation Denial-of-Service Vulnerability. This vulnerability allows network-adjacent attackers to create a denial-of-service condition on affected installations of Harman Becker MGU21 devices. Authentication is not required to exploit this vulnerability. The specific flaw exists within the Bluetooth stack of the BCM89359 chipset. The issue results from the lack of proper validation of Bluetooth frames. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-23942.

Key dates

02Disclosure timeline

May 22, 2025 CVE published
May 22, 2025 Record updated