Thermal Systems Ltd

Security maintenance in progress

Our login system is temporarily unavailable

A critical security vulnerability affecting PHP, the software that runs many websites worldwide, was recently made public. As a precaution, we have taken our login systems offline while we apply the security updates.

Our team is working tirelessly to update and check every affected system. This is a thorough process and may take some time. Login access will only be restored once each system has been fully patched and verified as safe.

Your data and alarms are not affected. Your base units are still collecting and storing data, and alarms will continue to flow as normal. The only change is that you can't log in to view your data online for now.

A representative will be in touch with you shortly to discuss alternative options while login access is unavailable.

What you need to know

About the vulnerability

The UK National Cyber Security Centre (NCSC) has issued guidance urging organisations to update PHP systems immediately. The issues are tracked as CVE-2026-109618 and CVE-2026-109619.

Last updated: 22 October 2026