CVE-2024-48967 — Threat Intelligence Report

Vendor/Product: Baxter / Life2000 Ventilator & Service PC
CVE ID: CVE-2024-48967
CVSS v3.1 Score: 10.0 (Critical)
CISA KEV: No
Poc/Exploit: None known
Patch Status: Unpatched (as of this report)

Executive Summary

CVE-2024-48967 is a critical-severity (CVSS 10.0) vulnerability in Baxter's Life2000 ventilator and its associated Service PC. The flaw stems from insufficient audit logging capabilities, which prevents the detection of malicious activity and hampers forensic examination after a security incident. An attacker with network or physical access to the ventilator or Service PC could make unauthorized changes to ventilator settings without leaving a trace, potentially leading to unauthorized disclosure of patient information and unintended impacts on device performance. As of this report, no patch is available, no exploit has been publicly disclosed, and the vulnerability has not been added to the CISA KEV catalog.

The affected product is a medical ventilator — a life-sustaining device — which elevates the severity of this issue beyond typical IT vulnerabilities. The combination of a perfect CVSS score and the absence of audit logging makes this a high-priority concern for healthcare delivery organizations (HDOs) using Baxter Life2000 devices.

Technical Analysis

The NVD description indicates the root cause is a lack of sufficient audit logging capabilities in both the Life2000 ventilator and the Service PC. The description explicitly states that this deficiency "allow[s] for detection of malicious activity and subsequent forensic examination" to be bypassed entirely. In other words, the device does not record security-relevant events such as configuration changes, authentication attempts, or system-level access to the ventilator settings interface.

The attack surface includes:

• The ventilator itself — accessible via its local user interface, potentially via a maintenance port or network connection.
• The Service PC — a companion system used for configuration, monitoring, and maintenance of the ventilator, likely running Windows-based or proprietary software.

The vulnerability class is insufficient audit logging (CWE-778). The attack mechanism is straightforward: an attacker who gains access to the device (either via the network, physical access, or a compromised Service PC) can modify ventilator settings — potentially including alarm thresholds, ventilation parameters, or safety limits — without any event being recorded. This eliminates the ability of security teams to detect the attack during or after the fact, and prevents forensic reconstruction of the incident.

The CVSS vector is notable: AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H. Key observations:

• Attack Vector: Adjacent (AV:A) — the attacker must be on the same network segment or have physical proximity (e.g., via Bluetooth, Wi-Fi, or a local network connection to the Service PC).
• Attack Complexity: High (AC:H) — successful exploitation requires specific conditions or advanced knowledge of the device protocol/interface.
• Privileges Required: None (PR:N) — no authentication is required to trigger the vulnerability condition (i.e., make unauthorized changes without detection).
• User Interaction: None (UI:N) — no victim interaction needed.
• Scope: Changed (S:C) — the impact extends beyond the vulnerable component; for example, compromised ventilator settings could impact patient safety (a different security domain).
• Confidentiality/Integrity/Availability Impact: High (C:H/I:H/A:H) — full impact across all three pillars.

The lack of an identified CWE in the NVD data is notable — this suggests the assigner (Baxter or a CNA) chose not to map a specific CWE, though functionally this aligns with CWE-778 (Insufficient Logging) or potentially CWE-284 (Improper Access Control) given the ability to make unauthorized changes.

Technical details of the underlying protocol or interface are not disclosed in the NVD description. No specific APIs, firmware versions, or configuration parameters are mentioned. As such, we must treat this as a vulnerability-class issue rather than a specific implementation flaw. The absence of affected-version information suggests all currently deployed Life2000 units are potentially vulnerable.

Exploitation Scenarios

No public exploit code or PoC exists for CVE-2024-48967 at the time of writing. The following attack chain is inferred from the vulnerability class and the NVD description.

Scenario 1: Network-based Attack via Service PC

1. Reconnaissance/Target Identification: An attacker with access to the hospital network (e.g., via a compromised workstation, a malicious insider, or an unsecured network segment) performs network scanning to identify the Life2000 Service PC. The Service PC may be discoverable via open ports, hostname patterns (e.g., "Baxter", "Life2000"), or DHCP hostname listings. If the hospital network is segmented poorly, the attacker could also scan for the ventilator's own network interfaces.

2. Access Acquisition: The attacker gains access to the Service PC — either through stolen credentials (the CVSS vector indicates PR:N, but real-world access may require some foothold), exploiting a separate vulnerability on the PC, or physical access to the device. If the ventilator has a direct network interface, the attacker may communicate with it directly using the vendor's proprietary protocol (which is not publicly documented and is therefore treated as "insufficient technical detail").

3. Triggering the Flaw: The attacker accesses the ventilator configuration interface (either via the Service PC application or directly on the device). The insufficiency of audit logging means that no logging mechanism records this access. The attacker modifies ventilator settings — for example, changing alarm thresholds, altering ventilator modes, disabling safety features, or modifying patient data records.

4. Post-Exploitation Impact: Because no audit trail exists, the attacker's actions go completely undetected. Patient treatment could be compromised (e.g., inappropriate ventilation parameters), causing clinical harm. Additionally, if the ventilator stores or transmits protected health information (PHI), the attacker could exfiltrate this data, leading to unauthorized disclosure (C:H in the CVSS vector). The stability of the device could also be impacted (A:H), potentially causing a denial-of-service condition if settings are changed to unsafe values.

Scenario 2: Physical/Tampering Attack

1. Reconnaissance: An attacker with physical access (e.g., a disgruntled employee, a visitor in an unsecured ICU, or a maintenance impersonator) identifies the Life2000 ventilator at the bedside.

2. Access: The attacker interacts directly with the ventilator's touchscreen or physical controls, or connects a laptop to the ventilator's service port.

3. Trigger: The attacker changes ventilator settings through the on-device interface. No authentication is required (per PR:N) or, if authentication exists, the attacker bypasses it. The lack of audit logging means no event is recorded.

4. Impact: Same as Scenario 1 — unauthorized modification of patient-critical settings with no forensic evidence left behind.

Notable limitation: The high attack complexity (AC:H) in the CVSS vector suggests that successful exploitation may require specific conditions — e.g., undocumented protocol knowledge, timing windows, or specific device states. However, from a defensive standpoint, the complete absence of audit logging means that organizations should assume exploitation can occur silently if network access is achieved.

Impact Assessment

This vulnerability is rated CVSS 10.0 (Critical), the maximum possible score. The business and clinical impact is severe for several reasons:

• Patient safety at risk (Integrity/High): Unauthorized changes to ventilator settings can directly harm patients. Ventilators control breathing for patients who cannot breathe independently — a wrong setting can cause hypoxia, hypercapnia, or lung injury.
• PHI exposure (Confidentiality/High): Ventilators and their service PCs may store patient-identifiable data, treatment history, or physiological data. Unauthorized disclosure violates HIPAA and other data-protection regulations.
• Device availability (Availability/High): Malicious configuration changes could render the device non-functional or force it into unsafe operational states.
• Regulatory/legal exposure: Healthcare organizations are subject to FDA reporting requirements for medical device cybersecurity incidents. The lack of audit logs hampers incident response and may complicate regulatory compliance.
• Forensic gap: The absence of audit logging means that even if patient harm occurs, investigators cannot determine the cause. This creates liability issues for the hospital.

Blast radius: In a typical hospital deployment, each Life2000 ventilator is a standalone device connected to a Service PC. The "Scope: Changed" in the CVSS vector indicates that the impact extends beyond the device itself — compromised ventilator settings impact the patient and potentially the broader care ecosystem. If the Service PC is networked with other hospital systems, the attack could pivot to other devices on the same network segment, although this is not directly indicated by the vulnerability description.

Affected systems: All Baxter Life2000 ventilators and associated Service PCs, per the CNA title. No version information is available; assume all deployed units are affected until a patch is issued.

Exploitation likelihood: EPSS score of 0.00612 (46th percentile) suggests a low probability of exploitation in the near term. However, this vulnerability is in a medical device with a perfect CVSS score — threat actors targeting healthcare (e.g., ransomware groups, state-sponsored actors) may probe for such devices. The lack of public exploit code does not preclude the existence of private exploits.

Detection Guidance

Detection of CVE-2024-48967 is fundamentally challenging because the vulnerability IS the lack of logging. If the device does not generate logs, there is nothing to detect at the device level. Therefore, detection must focus on network-level activity and behavioral anomalies on the Service PC and surrounding infrastructure.

Sigma Rule

title: Potential Unauthorized Access to Baxter Life2000 Ventilator Service PC
id: 4f3a2c5e-8d7b-4e1a-9c34-2b5d6e7f8a90
status: experimental
description: Detects suspicious network connections or process executions on a Baxter Life2000 Service PC that may indicate unauthorized access attempts. Since the device lacks audit logging, anomalies on the Service PC host are a proxy indicator.
author: Valtersit Threat Intelligence
date: 2025/01/01
logsource:
    category: process_creation
    product: windows
detection:
    selection_proc:
        Image|endswith:
            - '\cmd.exe'
            - '\powershell.exe'
            - '\wmic.exe'
            - '\reg.exe'
        CommandLine|contains:
            - 'remote'
            - 'net use'
            - 'ipconfig'
            - 'tasklist'
            - 'shutdown'
    selection_conn:
        EventID: 3
        DestinationPort:
            - 445
            - 3389
            - 5985
            - 5986
        DestinationIp|startswith:
            - '10.'
            - '192.168.'
            - '172.'
    condition: selection_proc or selection_conn
    timeframe: 5m
level: high
falsepositives:
    - Legitimate IT administration of the Service PC
    - Scheduled maintenance tasks
tags:
    - cve.2024.48967
    - attack.t1078
    - attack.t1548

YARA Rule

/*
    YARA rule to detect Baxter Life2000 Service PC software
    or related configuration artifacts that may indicate
    tampering or unauthorized access.
    Since no files are documented for this CVE, this rule
    focuses on generic artifacts associated with the device.
*/
rule Baxter_Life2000_Config_Artifact
{
    meta:
        author = "Valtersit Threat Intelligence"
        description = "Detects configuration or log artifacts associated with Baxter Life2000 ventilator"
        cve = "CVE-2024-48967"
        date = "2025-01-01"

    strings:
        $cfg1 = "Life2000" ascii wide
        $cfg2 = "ventilator" ascii wide
        $cfg3 = "ServicePC" ascii wide
        $cfg4 = "Baxter" ascii wide
        $xml = "<configuration" ascii
        $log = ".log" ascii

    condition:
        filesize < 2MB and
        2 of ($cfg*) and
        ($xml or $log)
}

Suricata IDS Rule

alert tcp any any -> any any (msg:"CVE-2024-48967 - Potential Baxter Life2000 Unauthorized Access Attempt"; flow:established,to_server; content:"Life2000"; nocase; content:"GET"; http_method; sid:2024489; rev:1; metadata:cve_id CVE-2024-48967; reference:url,https://nvd.nist.gov/vuln/detail/CVE-2024-48967; classtype:attempted-admin; priority:1;)

alert tcp any any -> any 3389 (msg:"CVE-2024-48967 - RDP Connection to Baxter Service PC Network"; flow:to_server; dsize:>0; sid:2024490; rev:1; metadata:cve_id CVE-2024-48967; classtype:attempted-admin; priority:2;)

Note: Since the device protocol is not documented, network detection must rely on generic indicators — connections to known Service PC IPs from unexpected hosts, RDP sessions, or SMB activity.

Elastic Detection

EQL Query:

// Detect unusual processes on Baxter Service PC hosts
process where
  host.hostname in ("*life2000*", "*baxter*", "*vent*") and
  process.executable in ("C:\\Windows\\System32\\cmd.exe",
                          "C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\powershell.exe",
                          "C:\\Windows\\System32\\wmic.exe",
                          "C:\\Windows\\System32\\net.exe") and
  not process.command_line in ("* /c *login*", "* /c *status*") and
  process.start_time >= now() - 24h

// Detect new network connections from Service PC hosts
network where
  host.hostname in ("*life2000*", "*baxter*", "*vent*") and
  destination.port in (445, 3389, 5985, 5986) and
  not source.ip in ("127.0.0.1", "::1") and
  network.direction == "outbound"

Splunk SPL Query

index=windows sourcetype=WinEventLog:Security
| search (host="*life2000*" OR host="*baxter*" OR host="*vent*")
| search (EventCode=4624 OR EventCode=4625 OR EventCode=4648)
| where Account_Name!=system AND Account_Name!=local_service AND Account_Name!=network_service
| stats count by host, Account_Name, Logon_Type, Workstation_Name, Source_Network_Address
| where count > 3 OR Logon_Type=3 OR Logon_Type=10
| table _time, host, Account_Name, Logon_Type, Source_Network_Address, Workstation_Name, count

Wazuh OSSEC Rule

<group name="baxter-life2000,">
  <rule id="105001" level="12">
    <decoded_as>json</decoded_as>
    <field name="hostname">\.(life2000|baxter|vent)</field>
    <field name="win.system.eventID">^4688$</field>
    <regex>New Process Name: (\S+\\cmd\.exe|\S+\\powershell\.exe|\S+\\wmic\.exe)</regex>
    <description>CVE-2024-48967: Suspicious process execution on Baxter Life2000 Service PC</description>
    <group>medical_device,process_monitoring,cve_2024_48967,</group>
    <mitre>
      <id>T1078</id>
    </mitre>
  </rule>

  <rule id="105002" level="10">
    <decoded_as>json</decoded_as>
    <field name="hostname">\.(life2000|baxter|vent)</field>
    <field name="win.system.eventID">^5156$</field>
    <regex>Destination Port:\s+(3389|445|5985|5986)</regex>
    <description>CVE-2024-48967: Outbound connection from Baxter Service PC to potentially malicious host</description>
    <group>medical_device,network_connection,cve_2024_48967,</group>
    <mitre>
      <id>T1078</id>
    </mitre>
  </rule>
</group>

Mitigation & Patch Guidance

Patch Status: UNPATCHED (Confidence: 0/4) — No patch evidence exists from any tracked source. Baxter has not released a firmware or software update to address CVE-2024-48967 at the time of this report.

Immediate Mitigations

1. Network segmentation: Isolate the Life2000 ventilators and Service PCs on a dedicated VLAN with strict access control lists (ACLs). Restrict ingress/egress traffic to only required ports and protocols.
2. Access control: Restrict physical and logical access to the Service PC to authorized clinical/biomedical staff only. Implement role-based access control (RBAC) on any network shares or administrative interfaces.
3. Supplemental monitoring: Deploy a network tap or span port monitoring on the segment containing the ventilators. Apply the Suricata/Sigma detections above to watch for anomalies.
4. Disable unnecessary services: On the Service PC, disable RDP, SMBv1, and other network services not required for clinical operations, per manufacturer guidance.
5. Manual log capture: If feasible, implement an external logging mechanism that captures Service PC events via Windows Event Forwarding (WEF) or a syslog agent — the device itself does not log, but the underlying OS may.
6. Vigilance for configuration drift: Periodically (e.g., weekly) compare current ventilator settings against a documented baseline of expected clinical parameters. Any unexplained changes should be treated as a potential security incident.

Patch/Upgrade Steps

1. Monitor Baxter's official security advisory site and the FDA's Medical Device Recall/Safety Alerts database for announcements.
2. When a firmware update is released, test it in a non-production environment before deployment.
3. Coordinate with Baxter clinical/biomedical engineers for patch deployment, as ventilator downtime must be carefully managed to ensure patient safety.
4. Document any interim risk acceptance in the organization's risk register, given the unpatched critical state.

Long-Term Hardening

1. Procurement requirements: When purchasing new ventilators, require vendor attestation of audit logging capabilities and alignment with FDA's premarket cybersecurity guidance (Section 524B of FD&C Act).
2. Continuous security monitoring: Integrate medical device monitoring into the broader SOC workload, using the detections above.
3. Incident response planning: Develop a playbook for suspected ventilator tampering, including procedures for manual device inspection and cross-referencing with other hospital systems (e.g., EHR, clinician notes) to detect anomalies.
4. Regular risk assessments: Re-evaluate the risk posed by CVE-2024-48967 quarterly, or when new intelligence emerges.
5. Consider compensating controls: If the device supports it, enable any secondary authentication mechanisms or physical key locks on the ventilator's service port.

References

1. NVD Entry: CVE-2024-48967 — https://nvd.nist.gov/vuln/detail/CVE-2024-48967
2. Baxter Product Security Advisory (monitor for updates) — https://www.baxter.com/us-en/healthcare-professionals/product-security
3. FDA Cybersecurity of Medical Devices — https://www.fda.gov/medical-devices/digital-health-center-excellence/cybersecurity
4. MITRE ATT&CK — Valid Accounts (T1078) — https://attack.mitre.org/techniques/T1078/
5. CISA ICS Medical Device Advisories (periodic) — https://www.cisa.gov/news-events/ics-medical-advisories

Report generated by Valtersit Threat Intelligence. This document is based on available threat intelligence as of 2025-01-01. No in-the-wild exploitation has been confirmed, and no threat actor campaigns have been publicly attributed to this CVE as of the report date.