Why Firmware Updates Matter for Business Cyber Security in 2026

Firmware rarely appears on a user’s screen, but it determines how the hardware beneath your IT estate starts, connects and protects itself. It is present in laptops and servers, but also in routers, firewalls, switches, WiFi access points, storage systems, printers, security cameras, meeting-room equipment and Internet of Things (IoT) devices.

In 2026, firmware management is no longer a background maintenance task. A missed update can leave a known route into the network, while a rushed or poorly planned update can create avoidable downtime. Businesses need a controlled, risk-based process that brings firmware into vulnerability management, operational monitoring and the device lifecycle.

What is firmware and what does it do?

Firmware is low-level software stored on a device. It initialises and controls hardware components, often before the main operating system loads. On a laptop, this includes BIOS or UEFI firmware. On a router, firewall or wireless access point, the firmware package may also include the device’s embedded operating system and management functions.

Because firmware sits close to the hardware, it can influence secure boot, hardware security settings, network interfaces, storage controllers and the handover to the operating system. A weakness at this layer can therefore affect the foundation on which other security controls depend.

Why do firmware updates matter in 2026?

They close known security vulnerabilities

Manufacturers release firmware updates to correct security flaws, configuration weaknesses and defects. Once a vulnerability and its fix become public, attackers can analyse the update and look for organisations that have not applied it. Delaying an update can leave a documented weakness available for exploitation.

They protect the network edge

Routers, firewalls, VPN appliances, switches, wireless access points and cameras are attractive targets because they are always on, widely connected and often remotely managed. They may not run the same endpoint security agents as laptops and servers, so accurate inventory, secure configuration, monitoring and timely firmware updates become especially important.

They support platform integrity and recovery

Firmware helps establish how a device boots and which hardware settings can be trusted. Updates may repair weaknesses in secure boot, cryptographic verification, device management or component control. They can also improve resilience by correcting faults that cause crashes, failed boots or unreliable failover.

They maintain compatibility and performance

Operating systems, drivers, cloud management platforms and security tools continue to change. Outdated firmware can prevent devices from supporting newer security capabilities, cause management failures or create stability problems. Updates can resolve these issues, but they should still be tested against your own configuration and business applications.

They support cyber assurance and compliance

Cyber Essentials v3.3 requires in-scope software to remain licensed, supported and up to date. High-risk or critical vulnerability fixes must be applied within 14 days of release, and the 2026 assessment explicitly tests timely updating of operating systems and router and firewall firmware. For an internet-facing or actively exploited vulnerability, 14 days should be treated as a maximum rather than a target.

They show when a device needs replacing

An update process cannot protect hardware that the manufacturer no longer supports. If security updates have ended, the sustainable control is usually to replace the device or remove it from exposure. Isolation, restricted management access and other compensating controls may reduce risk temporarily, but they are not a permanent substitute for vendor support.

Which devices should be included in a firmware inventory?

Firmware management should cover more than laptops and servers. A practical inventory should include:

• Network and security devices – routers, firewalls, VPN appliances, switches, SD-WAN equipment and wireless access points.
• Compute platforms – laptop and desktop BIOS or UEFI, server firmware, baseboard management controllers and docking stations.
• Storage and resilience systems – storage arrays, NAS and SAN devices, backup appliances, tape libraries, UPS units and power-management systems.
• Workplace technology – printers, scanners, meeting-room systems, smart displays, desk phones and collaboration devices.
• Physical security and IoT – cameras, access-control systems, sensors, building-management devices and other connected equipment.
• Operational technology – industrial controllers, specialist machinery and safety-related systems, where updates require additional testing and change control.

For each asset, record the manufacturer, model, hardware revision, current firmware version, management method, business owner, location, internet exposure, support end date and the service it supports. If nobody owns the asset or knows whether it is supported, that is already a risk to address.

How to manage firmware updates safely

The NCSC’s vulnerability management guidance, reviewed in May 2026, recommends an update-by-default approach supported by asset identification, risk-based prioritisation, accountable exceptions and regular verification. The following process applies those principles to firmware.

1. Build an accurate asset and ownership baseline. Discover the devices in use, including equipment outside the traditional endpoint estate. Assign a technical owner and a business owner, and record current versions and support dates.
2. Define routine and emergency update paths. Set a normal maintenance cadence, but also create a faster process for actively exploited vulnerabilities and critical internet-facing devices. Security, IT operations and business owners should know who can authorise emergency work.
3. Prioritise by exposure and business impact. Consider whether the device is internet-facing, remotely managed, privileged, actively targeted or essential to a critical service. Do not use a severity score in isolation.
4. Use trusted vendor sources. Obtain updates from the manufacturer or an approved management platform. Confirm the exact model and hardware revision, read the release notes, check required intermediate versions and verify signatures, hashes or checksums where available.
5. Prepare a recovery route. Back up device configurations, not only business data. Confirm recovery keys, console or out-of-band access, high-availability failover, spare hardware and the vendor’s rollback or recovery procedure before deployment.
6. Test on representative equipment. Use a lab device, a representative branch or a small deployment group first. Test connectivity, authentication, routing, security policy, monitoring and the business services that depend on the device.
7. Deploy in controlled stages. Use phased or canary deployment where the platform supports it. Schedule routine work to reduce disruption, but do not wait for a convenient maintenance window when a vulnerability is being actively exploited. Apply temporary mitigations or isolate the asset if an update must be delayed.
8. Automate where it is safe to do so. Endpoint management, network management and AIOps platforms can identify version drift, schedule updates and report compliance. Safety-critical and operational technology may need vendor-approved testing and manual change control instead.
9. Verify the outcome. Confirm that the expected version is installed, the device has returned to a healthy state, its configuration is intact and monitoring is receiving data. Record evidence and investigate failed or rolled-back updates.
10. Manage exceptions and end-of-support risk. Every deferred update should have a named owner, documented reason, compensating controls and review date. Unsupported devices should enter a funded replacement plan rather than remain as permanent exceptions.

Firmware update FAQs

Do automatic operating system updates include firmware?

Sometimes. Modern laptops and mobile devices may receive firmware through the operating system or an endpoint management platform, but coverage varies by manufacturer and model. Network appliances, printers, storage platforms and IoT devices often use separate tools or update processes. Check rather than assume.

How quickly should a firmware update be installed?

Apply updates as soon as they can be deployed safely. High-risk and critical fixes should not sit in a routine quarterly cycle. Cyber Essentials sets a 14-day requirement for relevant high-risk or critical vulnerability fixes, while internet-facing or actively exploited weaknesses may require action much sooner.

Can a firmware update cause downtime?

Yes. A device may reboot, reset, lose compatibility or fail during an update. This is why configuration backups, power protection, high availability, staged deployment, out-of-band access and a tested recovery procedure are essential parts of the change.

What should we do when no update is available?

Review the vendor’s advisory and apply any approved mitigation. Restrict management access, remove unnecessary internet exposure, monitor for signs of compromise and document the risk. If the product is unsupported or cannot be secured, plan its replacement.

How CloudCoCo helps manage firmware risk

Firmware risk crosses security operations, IT operations, networks, workplace technology and procurement. It should not sit in a spreadsheet owned by nobody. CloudCoCo brings those disciplines together through one accountable UK team and can work alongside your internal team or provide a fully managed service.

• Cyber Security – continuous vulnerability management, exposure-led prioritisation, cyber assessments, managed detection and response, and incident-response support.
• Managed IT Services – endpoint lifecycle management, observability, service governance and clear ownership across fully managed or co-managed environments.
• WiFi and Network Edge – visibility and firmware compliance across wired, wireless and WAN environments, with AIOps supporting proactive operations.
• Hardware and Software – supported replacement equipment, procurement, asset lifecycle management and certified IT asset disposal.
• IT Consulting – fixed-scope cyber maturity assessments, costed roadmaps and senior advisory support where ownership or governance needs strengthening.

A structured estate review can show what you own, what is exposed, which devices are out of support, where updates are failing and what should be fixed first.

Talk to CloudCoCo about firmware, vulnerability and device lifecycle management.