CVE-2025-32059:

Overview

A critical security vulnerability has been identified in the Bluetooth software of certain automotive infotainment systems. This flaw could allow a nearby attacker to take complete control of the vehicle’s infotainment computer.

Vulnerability Explained in Simple Terms

The infotainment system’s Bluetooth component, developed by Alps Alpine and integrated by Bosch, has a fundamental programming error. It does not properly check the size of data it receives via a Bluetooth connection. By sending a specially crafted, oversized data packet, an attacker can overflow a memory buffer. This overflow corrupts the system’s memory and can be manipulated to inject and execute malicious code. The vulnerability is triggered during a standard Bluetooth data exchange on an established connection.

Impact on Affected Systems

The primary impact is full remote code execution with root (administrator) privileges on the infotainment Electronic Control Unit (ECU). An attacker within Bluetooth range (typically up to 10 meters) could potentially:

• Install persistent malware or spyware on the vehicle’s system.
• Access vehicle data, including contacts, call logs, or media.
• Use the infotainment system as a foothold to probe other connected vehicle networks (though direct control of driving functions is not indicated by this CVE alone).
• Cause the infotainment system to crash or become unstable.

Currently, this has been confirmed in the 2020 model year Nissan Leaf ZE1. Other vehicle models using the same Bosch/Alps Alpine infotainment ECU may be affected.

Remediation and Mitigation Advice

1. Primary Remediation: Apply Updates

• Vehicle Owners: Contact your local Nissan dealership or monitor official Nissan owner communication channels for a software update. This is the only way to permanently fix the vulnerability.
• Fleet Managers: Proactively coordinate with authorized service centers to schedule updates for affected vehicles.

2. Immediate Mitigations (If Update is Not Yet Available):

• Disable Bluetooth: When not in use, especially in public or untrusted locations, turn off the infotainment system’s Bluetooth visibility and pairing capability.
• Unpair Unnecessary Devices: Remove unused or unknown Bluetooth pairings from the vehicle’s list.
• Limit Use: Avoid making new Bluetooth pairings in public settings until the system is updated.

3. For IT & Security Professionals:

• Awareness: Inform employees driving company-owned or BYOD-affected vehicles of the risk and the above mitigations.
• Network Monitoring: If corporate devices are paired with the vehicle, monitor them for unusual activity, as they could be used as an indirect attack vector.
• Risk Assessment: Consider the potential for data exfiltration from connected mobile devices when evaluating organizational risk.

This is a high-severity vulnerability that requires attention. The attack requires proximity but is technically feasible, making prompt patching the critical defense.