CVE-2025-4394
📋 TL;DR
Medtronic MyCareLink Patient Monitor models 24950 and 24952 use an unencrypted filesystem on internal storage, allowing attackers with physical access to read and modify sensitive files. This vulnerability affects devices before June 25, 2025, potentially compromising patient data and device functionality.
💻 Affected Systems
- Medtronic MyCareLink Patient Monitor
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
An attacker could modify critical system files to disrupt device operation, alter patient data, or implant malware that affects connected medical systems.
Likely Case
Unauthorized access to patient health data stored on the device, potentially violating HIPAA and other privacy regulations.
If Mitigated
With proper physical security controls, the risk is limited to authorized personnel who could still access unencrypted data.
🎯 Exploit Status
Exploitation requires physical access to the device but no authentication or special tools beyond basic storage access capabilities.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Firmware update released June 25, 2025
Vendor Advisory: https://global.medtronic.com/xg-en/product-security/security-bulletins.html
Restart Required: Yes
Instructions:
1. Contact Medtronic support for firmware update instructions. 2. Download the latest firmware from Medtronic's secure portal. 3. Apply the update following manufacturer guidelines. 4. Verify the update completed successfully.
🔧 Temporary Workarounds
Physical Security Controls
allImplement strict physical access controls to prevent unauthorized handling of devices.
Data Minimization
allConfigure devices to store minimal patient data locally and rely on encrypted cloud storage.
🧯 If You Can't Patch
- Decommission affected devices and replace with updated models
- Implement 24/7 physical monitoring and access logging for all devices
🔍 How to Verify
Check if Vulnerable:
Check device model number (24950 or 24952) and firmware date - if before June 25, 2025, it is vulnerable.Check Version:
Check device system information in settings menu (no CLI available)Verify Fix Applied:
Verify firmware version/date is June 25, 2025 or later via device settings menu.📡 Detection & Monitoring
Log Indicators:
- Physical access logs showing unauthorized device handling
- Unexpected device reboots or configuration changes
Network Indicators:
- None - this is a physical access vulnerability
SIEM Query:
Device physical access logs showing unauthorized personnel handling medical devices