Are your smart home devices vulnerable to the recent PHP security leak?

A wave of concern regarding digital security has swept through the Netherlands following the discovery of a significant vulnerability in PHP, a widely used programming language. The flaw potentially allows attackers to seize control of servers and websites, leading to widespread disruptions. While most attention has been focused on government and educational portals, the National Cyber Security Center (NCSC) has issued a broader warning that affects everyday households, specifically regarding smart devices.

Nearly thirty percent of Dutch households now rely on at least one internet-connected appliance, ranging from smart doorbells and security cameras to automated washing machines. With the NCSC suggesting that these devices might contain the vulnerable code, many residents are questioning whether they should disconnect their gadgets entirely. However, the reality of the situation is more nuanced than a simple panic over connected appliances.

The reality of smart home risks

Experts suggest that the risk of a widespread hack targeting your home appliances is lower than initially feared. Daan Keuper of the security firm Computest points out that most smart devices are designed like phones that can call out, but do not have an external number that hackers can easily dial into. Furthermore, most of these products operate behind a home router, which acts as a secondary layer of defense, making direct infiltration quite difficult.

According to Ralph Moonen, a cybersecurity expert, the likelihood of a hacker bypassing your router to compromise a smart washing machine is slim, especially since routers themselves generally do not run on PHP. Most experts agree that if a smart device were to be compromised, it would likely happen through the manufacturer’s own server rather than a direct attack on your home network. In such cases, the responsibility lies squarely with the producer to patch the vulnerability.

Manufacturer accountability and your home network

New European regulations, specifically the Cyber Resilience Act, now hold manufacturers to higher standards regarding the security of their digital products. While this legislation promises a safer future, concerns remain regarding whether all international suppliers will push out necessary updates quickly enough. For expats managing property or staying in the Netherlands, this means you should prioritize tech news updates to ensure your devices are running the latest software versions.

For most international residents, the main takeaway is to maintain good digital hygiene. While your smart bulb is unlikely to be the primary target of a global hacking campaign, devices that allow external access, such as Network Attached Storage (NAS) drives, pose a higher risk. These devices are often intentionally configured to be reachable from abroad, which creates a more direct window for potential attackers to exploit vulnerabilities.

You could say that most smart devices have a phone to call out, but they have no number to be called on, and therefore you run little risk.

If you remain concerned about the security of your home setup, experts advise a few practical steps. Ensure all your devices are set to receive automatic updates, and consider placing your smart devices behind a dedicated firewall or using a VPN for extra protection. If you own an older device that no longer receives manufacturer support, it may be time to disconnect it from the internet entirely until the threat subsides. Ultimately, keeping your home network isolated from the open web is the most effective way to stay secure.