Outdated firmware is one of the most common entry points for cyberattacks on small business networks, and the fix is straightforward: keep the embedded software on every connected device patched on a regular schedule. Routers, printers, security cameras, VoIP phones, and even smart thermostats all run firmware that manufacturers update to close newly discovered security holes, and skipping those updates leaves a documented vulnerability open on your network.
What is firmware, and why does it matter for security?
Firmware is the low-level software permanently written into a hardware device that tells its physical components how to operate. A wireless printer uses firmware to negotiate Wi-Fi connections. A security camera uses firmware to control its image sensor and stream video. Without it, the device is inert hardware. Unlike the applications you install on a laptop, firmware sits closer to the metal and often runs with elevated privileges, which is exactly why attackers target it. A flaw in firmware can give an intruder a foothold that traditional antivirus software will not detect.
Why outdated firmware is a real security risk
Manufacturers issue firmware updates for two main reasons: to add features and to patch vulnerabilities discovered after the device shipped. CISA, the federal agency responsible for cybersecurity guidance, regularly publishes advisories listing firmware-level vulnerabilities in widely deployed business hardware, and many of the most disruptive attacks on small and mid-sized companies have exploited unpatched network devices that nobody thought to update. The risk compounds with every device added to the network: a single unpatched router or IP camera can be the pivot point an attacker uses to reach the rest of your environment.
Beyond security, current firmware also delivers practical benefits. Patches resolve stability bugs that cause printers to drop off the network or conferencing hardware to freeze mid-call. Updated firmware preserves compatibility with new operating systems and cloud services, so older equipment keeps working as the rest of your stack moves forward. And manufacturers occasionally release performance improvements that quietly extend the useful life of equipment you have already paid for.
How to install firmware updates without breaking things
Firmware updates carry a small but real risk of failure. A power loss mid-update can brick a device, and a bad update occasionally introduces new bugs of its own. A few habits keep the process safe:
- Back up configurations first. Most network devices let you export a configuration file. Save it before applying an update so you can restore the device to a working state if the update misbehaves.
- Read the release notes. The manufacturer documents which vulnerabilities are patched and which features change. This tells you whether the update is urgent or can wait for a maintenance window.
- Follow the manufacturer’s procedure exactly. Some devices require updates over a wired connection. Some require staged updates through intermediate firmware versions. Skipping a step is the most common cause of a failed update.
- Schedule updates during off-hours. Reboots interrupt service. Doing the work overnight or on weekends keeps the team productive and gives you time to roll back if something goes wrong.
- Test on one device before rolling out broadly. If you have ten identical access points, update one and let it run for 24 to 48 hours before touching the rest. A bad update found on one device is a manageable problem; a bad update applied to all ten is an outage.
Which devices need firmware updates the most?
Every internet-connected device in a business environment has firmware, but a few categories deserve closer attention because they sit at the edge of the network and are common attacker targets:
- Routers, firewalls, and switches. These devices control traffic flow and have privileged access to everything on the network.
- Wireless access points. Wi-Fi infrastructure is exposed by definition, and older access points often run firmware that has not been touched in years.
- IP security cameras and NVRs. Network video equipment is among the most exploited categories of business hardware, with attackers using compromised cameras to reach internal networks.
- VoIP phones and conferencing hardware. Voice equipment runs full operating systems and is often overlooked during patch cycles.
- Network printers and multifunction devices. Modern printers store documents, scan to email, and connect to cloud services, making them an attractive lateral-movement target.
Keeping Pittsburgh small businesses secure
Tracking firmware versions across a fleet of devices, reading release notes, scheduling maintenance windows, and verifying that every update applied successfully is a meaningful amount of work. For a business owner already managing operations, sales, and staff, it is the kind of task that gets postponed until something breaks.
That is the gap CyberJaz fills for small and mid-sized businesses across the Pittsburgh region. Our managed IT services include firmware monitoring and patching across routers, firewalls, access points, cameras, phones, and other connected hardware, so updates happen on schedule and on a tested process. To find out how we can take firmware management off your plate, contact our team to discuss a network security assessment.
Frequently asked questions
How often should firmware be updated on business network devices?
Check for firmware updates on critical network devices (routers, firewalls, access points) at least monthly, and apply security patches as soon as the manufacturer releases them. Non-critical devices like printers can be reviewed quarterly. Subscribe to vendor security advisories so urgent patches do not sit unnoticed.
What happens if a firmware update fails?
A failed firmware update can leave a device unresponsive or partially functional, often called “bricking.” Most modern business-grade equipment includes a recovery mode or rollback feature that restores the previous firmware version. Backing up the device configuration before any update means you can restore settings quickly even if a full reset becomes necessary.
Is firmware different from software updates?
Yes. Software updates apply to the applications running on top of an operating system, while firmware is the embedded code that controls the device hardware itself. Firmware operates at a lower level and typically requires a device reboot to apply, whereas software updates often install while the device continues to run.
Can outdated firmware really cause a data breach?
Yes, and it is a documented attack pattern. CISA’s Known Exploited Vulnerabilities catalog regularly lists firmware-level flaws in routers, firewalls, and IoT devices that are being actively exploited in the wild. An unpatched edge device gives an attacker an entry point into the network, from which they can move toward more valuable systems.
Do I need to update firmware on devices that work fine?
Yes. A device that operates normally can still have a critical security flaw that an attacker could exploit at any time. “If it isn’t broken, don’t fix it” is dangerous reasoning when applied to firmware, because the attack surface is invisible until something goes wrong.
