CVE-2025-0626

Hidden Functionality vulnerability in Contec Health CMS8000 Patient Monitor

Description

The "monitor" binary in the firmware of the affected product attempts to mount to a hard-coded, routable IP address, bypassing existing device network settings to do so. The function also enables the network interface of the device if it is disabled. The function is triggered by attempting to update the device from the user menu. This could serve as a backdoor to the device, and could lead to a malicious actor being able to upload and overwrite files on the device.

Remediation

Workaround:

  • Per FDA recommendation, CISA recommends users remove any Contec CMS8000 devices from their networks. If asset owners cannot remove the devices from their networks, users should block 202.114.4.0/24 from their networks, or block 202.114.4.119 and 202.114.4.120. Please note that this device may be re-labeled and sold by resellers. For a list of known re-labeled devices, please refer to FDA's safety communication https://www.fda.gov/medical-devices/safety-communications/cybersecurity-vulnerabilities-certain-patient-monitors-contec-and-epsimed-fda-safety-communication .

Category

7.7
CVSS
Severity: High
CVSS 4.0 •
CVSS 3.1 •
EPSS 0.12%
Affected: Contec Health CMS8000 Patient Monitor
Published at:
Updated at:

References

Link Tags
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

Frequently Asked Questions

What is the severity of CVE-2025-0626?
CVE-2025-0626 has been scored as a high severity vulnerability.
How to fix CVE-2025-0626?
As a workaround for remediating CVE-2025-0626: Per FDA recommendation, CISA recommends users remove any Contec CMS8000 devices from their networks. If asset owners cannot remove the devices from their networks, users should block 202.114.4.0/24 from their networks, or block 202.114.4.119 and 202.114.4.120. Please note that this device may be re-labeled and sold by resellers. For a list of known re-labeled devices, please refer to FDA's safety communication https://www.fda.gov/medical-devices/safety-communications/cybersecurity-vulnerabilities-certain-patient-monitors-contec-and-epsimed-fda-safety-communication .
Is CVE-2025-0626 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-0626 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-0626?
CVE-2025-0626 affects Contec Health CMS8000 Patient Monitor.
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