CVE-2025-1204Public exploitNetwork attack vector

File overwrite via hard-coded NFS update host

Published Feb 25, 2025 · Updated Feb 25, 2025

Hidden functionality in Contec Medical Systems CMS8000 Patient Monitor version 0 allows attackers to overwrite files via an impersonated NFS server. The firmware's update binary bypasses configured network settings, mounts 202.114.4.119:/pm, and recursively copies its contents over /opt/bin without integrity validation. Exploitation requires control or impersonation of the routable host plus a precisely timed physical C-button press during boot; replaced executables run with root privileges.

CVSS severity7.7
High
EPSS probability0.47%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hidden functionality in Contec Medical Systems CMS8000 Patient Monitor version 0 allows attackers to overwrite files via an impersonated NFS server. The firmware's update binary bypasses configured network settings, mounts 202.114.4.119:/pm, and recursively copies its contents over /opt/bin without integrity validation. Exploitation requires control or impersonation of the routable host plus a precisely timed physical C-button press during boot; replaced executables run with root privileges.

The record

CVE
CVE-2025-1204
Published
Feb 25, 2025
Updated
Feb 25, 2025
Vendor
Contec Medical Systems Co., Ltd.
Product
CMS8000 Patient Monitor
Classifications
CWE-912, T1105, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 25, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Contec Medical Systems Co., Ltd. · CMS8000 Patient Monitorversion=0

Published CVSS scores

7.7CISACVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-912Hidden Functionality
T1105Ingress Tool Transfer
T1557Adversary-in-the-Middle

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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