CVE-2025-0683
📋 TL;DR
The Contec Health CMS8000 Patient Monitor transmits unencrypted patient data to a hard-coded public IP address when monitoring begins, potentially exposing sensitive health information. This affects healthcare facilities using these devices in their default configuration, creating privacy and compliance risks.
💻 Affected Systems
- Contec Health CMS8000 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
Patient health data is intercepted by malicious actors, leading to privacy violations, medical identity theft, or manipulation of critical health information during transmission.
Likely Case
Unauthorized access to patient monitoring data by entities controlling the hard-coded IP address, potentially violating HIPAA and other privacy regulations.
If Mitigated
Limited exposure if devices are isolated from external networks and data transmission is blocked, though default behavior remains risky.
🎯 Exploit Status
Exploitation requires network access to monitor traffic or control of the hard-coded IP. No authentication needed as transmission occurs automatically.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: https://www.cisa.gov/news-events/ics-medical-advisories/icsma-25-030-01
Restart Required: No
Instructions:
No official patch exists. Follow FDA and CISA guidance for mitigation steps including network isolation and configuration changes.
🔧 Temporary Workarounds
Network Segmentation
allIsolate patient monitors on dedicated VLANs with strict firewall rules blocking all external communication
Firewall Block Hard-Coded IP
allBlock all outbound traffic to the hard-coded IP address at network perimeter
🧯 If You Can't Patch
- Disconnect devices from any network with internet access
- Implement physical security controls to prevent unauthorized device access
🔍 How to Verify
Check if Vulnerable:
Monitor network traffic from CMS8000 devices for outbound connections to external IP addresses when patient monitoring beginsCheck Version:
Check device firmware version through device interface or manufacturer documentationVerify Fix Applied:
Confirm no outbound traffic reaches external networks and patient data transmission is contained within secure medical network📡 Detection & Monitoring
Log Indicators:
- Outbound connection attempts to external IP addresses from medical devices
- Patient data transmission logs showing external destinations
Network Indicators:
- TCP/UDP traffic from patient monitors to external IP addresses
- Unencrypted medical data in network captures
SIEM Query:
source_ip IN (medical_device_ips) AND dest_ip IN (external_ips) AND protocol IN (tcp, udp)🔗 References
- https://www.cisa.gov/news-events/ics-medical-advisories/icsma-25-030-01
- https://www.fda.gov/medical-devices/safety-communications/cybersecurity-vulnerabilities-certain-patient-monitors-contec-and-epsimed-fda-safety-communication
- https://www.bleepingcomputer.com/news/security/backdoor-found-in-two-healthcare-patient-monitors-linked-to-ip-in-china/
- https://www.cisa.gov/resources-tools/resources/contec-cms8000-contains-backdoor
- https://www.fda.gov/medical-devices/safety-communications/cybersecurity-vulnerabilities-certain-patient-monitors-contec-and-epsimed-fda-safety-communication
