CVE-2025-32875

Comprehensive Technical Analysis of CVE-2025-32875

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-32875 CVSS Score: 9.8

The vulnerability in the COROS application through version 3.8.12 for Android involves a critical flaw in the Bluetooth pairing and bonding process. The application does not enforce Bluetooth pairing and bonding, leading to unencrypted data transmission via Bluetooth Low Energy (BLE). This lack of encryption allows attackers within Bluetooth range to eavesdrop on the communication. Additionally, even if users manually initiate pairing and bonding, the application continues to transmit data without requiring the watch to be bonded, enabling machine-in-the-middle (MitM) attacks.

Severity Evaluation:

• Confidentiality Impact: High
• Integrity Impact: High
• Availability Impact: Medium

The CVSS score of 9.8 indicates a critical vulnerability due to the potential for unauthorized access to sensitive data and the ease of exploitation within Bluetooth range.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

1. Eavesdropping: Attackers can intercept unencrypted data transmitted between the COROS watch and the Android application.
2. Machine-in-the-Middle (MitM) Attacks: Attackers can intercept and modify the data being transmitted, potentially injecting malicious data or commands.
3. Data Exfiltration: Sensitive information such as user activity data, health metrics, and personal identifiers can be captured by attackers.

Exploitation Methods:

• Passive Eavesdropping: Using Bluetooth sniffing tools to capture unencrypted data.
• Active MitM Attacks: Intercepting and modifying data in transit, potentially leading to data corruption or unauthorized actions.

3. Affected Systems and Software Versions

Affected Systems:

• COROS application versions through 3.8.12 for Android.
• COROS watches that communicate with the affected Android application.

Software Versions:

• All versions of the COROS application up to and including 3.8.12.

4. Recommended Mitigation Strategies

Immediate Mitigation:

1. Update Software: Ensure that the COROS application is updated to the latest version that addresses this vulnerability.
2. Manual Pairing and Bonding: Users should manually initiate Bluetooth pairing and bonding through Android settings, although this is not a complete mitigation due to the fallback behavior.
3. Limit Bluetooth Range: Minimize the use of the COROS application in public or untrusted environments.

Long-Term Mitigation:

1. Enforce Encryption: Implement robust encryption for all data transmitted via BLE.
2. Mandatory Pairing and Bonding: Ensure that the application enforces Bluetooth pairing and bonding before any data transmission.
3. Regular Security Audits: Conduct regular security audits and penetration testing to identify and mitigate similar vulnerabilities.

5. Impact on Cybersecurity Landscape

This vulnerability highlights the importance of secure communication protocols in IoT devices and wearables. The lack of encryption and proper pairing mechanisms can lead to significant data breaches and unauthorized access. It underscores the need for:

• Strong Encryption Standards: Ensuring that all data transmitted via wireless protocols is encrypted.
• Robust Pairing Mechanisms: Enforcing secure pairing and bonding processes to prevent unauthorized access.
• User Awareness: Educating users about the risks associated with unsecured Bluetooth communications.

6. Technical Details for Security Professionals

Technical Analysis:

• Bluetooth Pairing and Bonding: The application fails to initiate or enforce Bluetooth pairing and bonding, which are essential for establishing a secure communication channel.
• Data Encryption: The lack of encryption for data transmitted via BLE exposes sensitive information to eavesdropping and MitM attacks.
• Fallback Behavior: Even if users manually initiate pairing and bonding, the application's fallback behavior allows data transmission without requiring the watch to be bonded, creating a persistent vulnerability.

Recommendations for Developers:

1. Implement Secure Pairing: Ensure that the application enforces Bluetooth pairing and bonding before any data transmission.
2. Encrypt Data: Use strong encryption algorithms to protect data transmitted via BLE.
3. Regular Updates: Provide timely updates to address security vulnerabilities and enhance the overall security posture of the application.

Conclusion: CVE-2025-32875 represents a critical vulnerability in the COROS application that can lead to significant data breaches and unauthorized access. Immediate and long-term mitigation strategies, including enforcing encryption and secure pairing mechanisms, are essential to protect user data and maintain the integrity of the application. This vulnerability serves as a reminder of the importance of robust security measures in IoT and wearable devices.