Old firmware is a reason to check a device - not proof that it’s exposed. I’d start by confirming the installed version, checking which flaws apply, and weighing patient harm before choosing an update or other safeguards.
My approach comes down to 3 steps:
- Find and verify: List devices, firmware versions, support status, and connections. Match each device to manufacturer and government advisories.
- Score and decide: Weigh patient safety, PHI exposure, network access, and recovery options. Choose an update, containment, replacement, or time-limited risk acceptance.
- Act and check: Test updates with clinical teams, prepare backup care workflows, restrict network and vendor access, and verify device function before returning it to care.
<u>A patch alone doesn’t close the job.</u> I’d also track deadlines, review new advisories, and confirm that each device remains safe to use. Risk-management tools can help coordinate that work, but hospital teams still handle device checks, updates, and clinical testing.
Hospital Device Firmware Risk Management Cycle
1. Find Devices and Confirm Firmware Vulnerabilities
Record Firmware Versions and Device Dependencies
Start with passive discovery. Review switch, DHCP, wireless-controller, and vendor-access logs, along with biomedical engineering and procurement records. Include vendor-maintained, legacy, unmanaged, and intermittently connected equipment. Passive methods can miss offline devices, so ask clinical owners to help fill those gaps. Before active scanning or firmware interrogation, get manufacturer confirmation that the method is safe and approval from biomedical engineering, IT security, and the clinical owner.[5]
For each device, record its manufacturer, model, serial or asset ID, location, owners, clinical function, firmware build, hardware revision, support status, connectivity, network segment, and IP and MAC addresses. Also document the responsible vendor, connected applications, data interfaces, authentication services, and remote-access paths.[4][6] Use this inventory to check each device against advisories.
Treat unknown or conflicting firmware versions as verification gaps. Ask the manufacturer or authorized service provider to confirm the installed build using an approved check. Keep the service report or firmware-screen evidence, along with the reviewer and verification date. Procurement records can establish support terms, but they don't replace a check of what's installed.
Confirm Affected Versions and Configurations
Once the inventory is complete, check the exact model, hardware revision, firmware build, and configuration against manufacturer bulletins, FDA safety communications, CISA advisories, and vulnerability disclosures. Check exposed services, remote access, authentication, and network reachability. Prioritize connected devices, devices handling electronic PHI, and time-sensitive clinical systems. Track unsupported devices, confirmed vulnerable devices, and devices with a reachable attack path separately.[2]
In April 2018, FDA and CISA described vulnerabilities in specified Abbott implantable cardioverter-defibrillator and cardiac resynchronization device families manufactured before April 19, 2018. The mitigation used a clinician-applied firmware update through the Merlin PCS Programmer, making product family and manufacturing date essential verification details.[7]
For each finding, keep the advisory identifier, publication and update dates, affected and fixed versions, configuration conditions, manufacturer response, and date checked. Document unresolved assumptions that affect treatment, alarms, orders, device settings, or PHI. Use this evidence to score clinical risk - not simply label a device outdated.[2]
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2. Score Clinical Risk and Choose Treatment
Once you’ve identified affected devices, score clinical risk - not just technical severity. Use the confirmed model, firmware version, and configuration to weigh patient safety, network exposure, and recovery options.
Assess Patient Harm, Exposure, and Recovery
Assess patient safety, care availability, PHI exposure, exploitability, and recovery time. Document plausible outcomes: altered readings, suppressed alarms, changed therapy settings, delayed diagnosis, PHI exposure, and lateral movement into connected systems. Check spare equipment, tested recovery procedures, manufacturer support, and expected downtime. The vulnerability’s CVSS score is only part of the picture.[4]
The same flaw can carry different risk depending on the device’s role, network reachability, and recovery options.
Same flaw, different clinical risk.
Hypothetical comparison
Device with the same firmware flaw Clinical role Network reachability Safeguards Recovery options Treatment priority Infusion pump controller Therapy delivery; altered dosing or interrupted treatment Segmented device VLAN; limited outbound access Manufacturer controls, restricted administration, monitoring, physical access controls Swap to a tested pump; manual backup workflow required Critical - rapid update, containment, or replacement decision Bedside monitor Measurements and alarms; altered readings or suppressed alarms Segmented clinical network; no direct internet access Access control, alarm cross-checks, centralized monitoring Increase bedside verification or replace the device High - depends on whether readings drive immediate treatment Nonclinical inventory workstation Administrative use; exposed records or a network foothold Broad enterprise connectivity Endpoint protection, MFA, standard patching, network controls Reimage or replace; alternate workstation available Moderate to high - priority rises if it can reach clinical networks or PHI systems
Segmentation lowers exposure, but you still need to track and remediate the vulnerability. Give the device higher priority if there’s no spare or tested recovery path.[4][6]
Compare Updates, Containment, Replacement, and Risk Acceptance
Choose treatment with clinical engineering, the clinical owner, security, and the vendor. Use the risk score to decide whether to update, contain, replace, or temporarily accept the risk. Any risk acceptance needs an expiration date. Prefer a manufacturer-authorized update when it’s safe, and avoid unapproved fixes or permanent reliance on containment.[4][11]
| Treatment | Appropriate conditions | Required safeguards | Verify residual risk |
|---|---|---|---|
| Manufacturer-authorized update | A validated update addresses the vulnerability without unacceptable care disruption | Exact-model compatibility, clinical testing, backup or rollback instructions, a maintenance window, and post-update verification | Confirm corrected firmware and working interfaces. |
| Compensating controls | An update is unavailable or temporarily unsafe to deploy | Restricted connections, controlled vendor access, monitoring, clinical checks, and a dated remediation plan | Check remaining attack paths and whether controls work as intended. |
| Replacement | The device is unsupported or remaining risk is unacceptable | A care-continuity plan, interoperability testing, staff training, and secure retirement | Confirm retirement of the old device and supportability of the replacement. |
| Temporary risk acceptance | Continued use presents less immediate clinical danger than available alternatives | Written patient-safety rationale, executive and clinical approval, safeguards, monitoring, and an expiration date | Reassess at expiration or when conditions change.[2][8][9] |
Carry the chosen treatment into the update, containment, or replacement plan in the next step.
Record each affected device in the risk register with its model, asset ID, firmware version, advisory ID, owner, support status, treatment, deadline, and residual risk.[6] Risk acceptance requires named executive and clinical approvers. Set an explicit expiration date - such as 30, 60, or 90 days, based on risk. Reopen the decision sooner if a patch becomes available, safeguards fail, or exploitation changes.[2][8][9]
3. Update Devices Safely or Limit Exposure
Test, Deploy, and Verify Firmware Updates
Once you choose a remediation approach, follow a controlled change-management process. Put one change owner in charge of coordinating biomedical engineering, clinical operations, IT, cybersecurity, and the manufacturer. Before installation, confirm compatibility with the exact device model, check prerequisites, and document recovery steps. Test core functions, alarms, accessories, authentication, and DICOM or HL7 interfaces on a representative device or in an approved environment.[1][3][10]
Start with a small pilot during an approved maintenance window, then deploy in waves. Define who can stop the rollout and which failures require a stop. Before returning each device to care, record its installed version and update time. Check clinical settings, connectivity, time synchronization, available logs, and downstream data delivery, then get clinical-user sign-off.
Limit Network Connections and Vendor Access
Place devices awaiting updates in a separate network zone and allow only required traffic. This helps prevent exposed devices from becoming a path into clinical systems. Before applying restrictions, check that they won't disrupt alarm delivery, image transfer, central monitoring, or device management. Watch for new outbound destinations, failed logins, unexplained reboots, and configuration changes.
Require named vendor accounts, time-limited access, least privilege, encrypted connections, and MFA. Log sessions, review activity after service, and disable access when the work ends. Don't assume all vendor activity is trusted. Investigate unusual transfers or commands.[12]
Plan for Care Continuity and Set Exception Deadlines
If updates can't happen immediately, limit exposure and set a short exception process. Before taking devices offline, confirm replacement equipment, manual workflows, transfer criteria, escalation contacts, and restoration priorities with the affected units. Rehearse downtime steps for high-risk equipment.
For each exception, document the owner, affected devices, clinical dependencies, threat, safeguards, review and expiration dates, and remediation or replacement plan. Set review intervals, and reassess after new advisories, exposure changes, device relocation, or workflow changes.
Escalate overdue items to clinical and enterprise risk leaders. Involve procurement when replacement depends on purchase and delivery timelines. Track each exception until every affected device is updated, replaced, or formally retired.
Conclusion: Repeat the Firmware Risk Review
Repeat the review when new advisories or changes appear - even after devices have been updated, contained, or replaced.
Firmware risk affects patient safety, privacy, care delivery, and enterprise risk. It’s not just IT maintenance. Repeat the cycle: discover devices, validate exposure, score clinical consequences, choose treatment, and verify both firmware and clinical function.
Track Firmware Coverage, Remediation, and Vendor Commitments
Set a risk-based review schedule. Reconcile discovery data daily where feasible, review advisories at least weekly, and hold clinical and cybersecurity reviews monthly.
Each month, track device coverage, verified firmware, and overdue remediation in one shared workflow. Require vendors to disclose support lifecycles, supported versions, update and rollback procedures, remote-access practices, and end-of-support dates.
Coordinate Risk Reviews With Censinet RiskOps™
Censinet RiskOps™ supports healthcare risk assessments, collaborative remediation workflows, benchmarking, and risk visualization. RiskOps coordinates risk work; hospital teams still handle discovery, patching, and clinical validation.
FAQs
What if my device vendor won’t confirm its firmware?
Record the device’s known details in your asset inventory. Treat unverified firmware as a potential risk. Use network segmentation, strict access controls, and added monitoring to keep the device isolated from critical systems.
Use Censinet RiskOps™ to track missing vendor information as a risk exception and document the clinical justification for continued use. Keep pressing the vendor for transparency. Include Software Bill of Materials (SBOM) requirements and clear vulnerability disclosure protocols in procurement contracts.
How do I weigh patching risks against patient safety?
Weigh technical severity against each device’s role in patient care and the downtime an update could cause. Bring clinical leadership, biomedical engineering, and IT into the decision. Test updates in a simulated, non-production clinical setting before deployment.
If patching is unsafe or impractical, use compensating controls such as network segmentation, access restrictions, or added monitoring. Record remediation decisions, the reasons behind them, and any remaining risk in your centralized risk register.
What evidence shows our firmware safeguards actually work?
Maintain an auditable risk register that links firmware vulnerabilities to clinical hazards, safety requirements, design modules, and verification tests. Retain time-stamped scan results, configuration exports that confirm access controls and logging are active, and remediation records.
Document testing in staging environments that mirror production clinical workflows. Results should show that patches fix vulnerabilities without compromising device performance. When patching isn’t feasible, document compensating controls and formal risk acceptance signed by authorized stakeholders.
