CVE-2025-3885

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

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.

References

Link	Tags
https://www.zerodayinitiative.com/advisories/ZDI-25-251/

Frequently Asked Questions

What is the severity of CVE-2025-3885?: CVE-2025-3885 has been scored as a medium severity vulnerability.
How to fix CVE-2025-3885?: To fix CVE-2025-3885, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-3885 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2025-3885 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-3885?: CVE-2025-3885 affects Harman Becker MGU21.

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Description

Category

CWE-20 – Improper Input Validation

References

Frequently Asked Questions