CVE-2025-32062:

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

At its core, this is a software coding error in a component (the Bluetooth stack) supplied by Alps Alpine and integrated into Bosch infotainment control units (ECUs). The software 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 run the attacker’s own code.

Impact and Risk Assessment

The impact of successful exploitation is severe. An attacker within Bluetooth range (typically up to 10 meters, but potentially farther with enhanced equipment) could achieve remote code execution with root (administrator) privileges. This means they could:

• Compromise the infotainment system’s functionality (audio, navigation, phone).
• Potentially access connected vehicle networks or driver data (e.g., contacts, call history).
• Use the system as a foothold for further attacks.
• Render the system unstable or inoperable.

This vulnerability has a HIGH severity rating with a CVSS score of 8.8. It was first confirmed in the 2020 Nissan Leaf ZE1 model, but other vehicle models using the same affected Bosch/Alps Alpine component may be impacted.

Remediation and Mitigation Advice

Primary Action: Apply Vendor Updates

1. Vehicle Owners: Contact your vehicle manufacturer (e.g., Nissan dealership) immediately. Inquire if a software update or patch is available for your infotainment system, specifically addressing Bluetooth security. Schedule an update as soon as possible.
2. Fleet Managers: Proactively reach out to manufacturers for guidance and patch schedules for affected models in your fleet.

Immediate Mitigations (If a Patch is Not Yet Available):

• Disable Bluetooth: When the vehicle is parked, especially in public or untrusted locations (parking lots, streets), disable the infotainment system’s Bluetooth visibility or functionality. Consult your owner’s manual for instructions.
• Limit Pairing: Do not pair unknown or untrusted devices with the vehicle.
• Power Down: When the vehicle is not in use for extended periods, turning it off fully reduces the attack window.

Long-Term Recommendation: Establish a process for regularly checking for and applying software updates for vehicle electronic systems, treating them with the same importance as updates for traditional IT equipment.