Philips' IntelliVue Patient and Avalon Fetal Monitors
Plan Patch8.3ICS-CERT ICSMA-18-156-01Jun 5, 2018
Attack VectorAdjacent
Auth RequiredNone
ComplexityHigh
User InteractionNone needed
Summary
Philips IntelliVue Patient Monitors (MX400-550, MP2/X2/MP30/MP50/MP70/NP90/MX700/800) and Avalon Fetal/Maternal Monitors (FM20/FM30/FM40/FM50) contain authentication bypass and memory access vulnerabilities (CWE-287, CWE-121, CWE-200). These vulnerabilities may allow an attacker on the local network to read or modify monitor memory without valid credentials. Successful exploitation could alter patient vital sign display, change alarm thresholds, or cause device restarts, potentially delaying patient diagnosis and treatment. Affected software revisions: Avalon F.0/G.0/J.3, IntelliVue MX Rev J-M, IntelliVue MP Rev B-M.
What this means
What could happen
An attacker with local network access to these monitors could read or modify their memory, potentially altering patient data display or alarm thresholds, or restart the devices causing loss of monitoring data and diagnostic delays during critical care.
Who's at risk
Hospital and healthcare facility operators responsible for patient monitoring systems. Critical care units, maternal-fetal monitoring areas, and any facility using IntelliVue MX/MP series or Avalon FM series monitors are affected. This includes bedside monitors, central monitoring stations, and integrated patient data displays.
How it could be exploited
An attacker on the same local network segment as an IntelliVue or Avalon monitor could exploit weak authentication mechanisms (CWE-287) to gain direct memory access (CWE-121). This allows reading sensitive patient information or writing malicious commands that change how the monitor displays vital signs or triggers alarms.
Prerequisites
- Local network access (same Ethernet segment as the monitors)
- No valid credentials required
Remotely exploitable over local networkNo authentication requiredNo patch currently available for affected versionsAffects medical devices used in critical careCVSS score 8.3 indicates high severity
Exploitability
Low exploit probability (EPSS 0.1%)
Affected products (3)
3 pending
ProductAffected VersionsFix Status
Avalon Fetal/Maternal Monitors FM20/FM30/FM40/FM50: with software Revisions F.0 G.0 and J.3F.0.G.0 | J.3No fix yet
IntelliVue Patient Monitors MX (MX400-550): Rev J-M and (X3/MX100 for Rev M only)Rev J-M | (X3/MX100 for Rev M only)No fix yet
IntelliVue Patient Monitors MP Series (includingMP2/X2/MP30/MP50/MP70/NP90/MX700/800): Rev B-MRev B-MNo fix yet
Remediation & Mitigation
0/5
Do now
0/1WORKAROUNDDeploy network access controls (MAC filtering, port security) to limit which devices can connect to the monitor network segment
Schedule — requires maintenance window
0/3Patching may require device reboot — plan for process interruption
HOTFIXContact Philips through your InCenter account to obtain and apply available remediation patches for supported software versions
HOTFIXRequest and implement upgrade path to patched versions from Philips for your specific monitor models
HOTFIXMonitor Philips product security website for patch availability and field change bulletins
Long-term hardening
0/1HARDENINGImplement network segmentation to isolate patient monitors on a dedicated, access-controlled medical device network separate from general IT infrastructure
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