CVE-2025-3885

Harman Becker MGU21 Bluetooth Improper Input Validation Denial-of-Service Vulnerability

State
Published
Severity
5.3 Medium
Published
May 22, 2025
Updated
May 22, 2025
Reserved
Apr 22, 2025

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Description

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.

Scores

CVSSScoreVectorSource
3.05.3 MediumCVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:Hzdi

Weaknesses

  • CWE-20 Improper Input Validation

Affected Products

ProductVersions
MGU21Harman Becker
  • MGU21_22-07 firmware with BCM89359 wireless chipset; LMP Version: 5.0 (0x9); LMP Subversion: 0x420dAffected

References

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