The vulnerability identified as CVE-2025-51643 affects Meitrack T366G-L GPS Tracker devices. These devices incorporate a Winbond 25Q64JVSIQ SPI flash memory chip that stores firmware and sensitive configuration data. The core issue is that this SPI flash chip is accessible without any authentication or tamper protection mechanisms. An attacker with physical access to the device can connect a standard SPI programmer and use tools such as flashrom to extract the firmware image directly from the chip. This extraction exposes sensitive information including APN (Access Point Name) credentials, backend server details, and network parameters embedded within the firmware. Such data exposure can lead to further compromise of the device's communication channels or backend infrastructure. The vulnerability is classified under CWE-200 (Exposure of Sensitive Information) and has a CVSS v3.1 base score of 2.4, indicating a low severity primarily due to the requirement of physical access and the limited impact on integrity and availability. No known exploits are currently reported in the wild, and no patches or firmware updates have been published to address this issue. The vulnerability does not require user interaction or privileges beyond physical possession of the device, and it does not affect the device's operational integrity or availability directly but compromises confidentiality of sensitive data stored in the firmware.

For European organizations utilizing Meitrack T366G-L GPS trackers, this vulnerability poses a confidentiality risk. Exposure of APN credentials and backend server information could allow attackers to intercept or manipulate GPS data transmissions, potentially leading to unauthorized tracking, data leakage, or disruption of fleet management and asset tracking operations. While the vulnerability requires physical access, in scenarios where devices are deployed in unsecured or publicly accessible environments (e.g., logistics vehicles, rental equipment, or outdoor asset tracking), the risk increases. Compromise of backend server information could facilitate targeted attacks against organizational infrastructure. Although the direct impact on device availability and integrity is minimal, the leakage of sensitive network parameters can undermine trust in the GPS tracking system and may lead to regulatory compliance issues related to data protection under GDPR if personal or sensitive location data is involved.

To mitigate this vulnerability, European organizations should implement strict physical security controls to prevent unauthorized access to GPS tracker devices, especially in field deployments. This includes secure mounting, tamper-evident seals, and regular physical inspections. Where possible, replace or upgrade devices with models that incorporate hardware-based tamper protection or encrypted storage for firmware and configuration data. Network-level mitigations include monitoring for anomalous device communications that may indicate compromised credentials. Organizations should also consider segmenting backend infrastructure to limit exposure if credentials are leaked. Additionally, implementing VPNs or encrypted communication tunnels between devices and backend servers can reduce the risk of data interception even if credentials are exposed. Finally, organizations should engage with the vendor to request firmware updates or patches that add authentication or encryption to the SPI flash access or consider alternative GPS tracking solutions with stronger security postures.