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Using server variables
Last update:
May 18, 2026
Note:
Place code that uses server variables inside cflock_ tags in circumstances that could result in race conditions from multiple accesses to the same variable. You do not have to lock access to built-in server variables._
ColdFusion provides the following standard built-in read-only server variables:
server.coldfusion
<cfscript>
val=server.coldfusion
writeDump(val)
</cfscript>| Variable | Description |
| InstallKit | The OS on which ColdFusion is installed. |
| appserver | The application server that ColdFusion is running on, for example, Tomcat. |
| expiration | The expiration date of ColdFusion license. |
| productlevel | Indicates if ColdFusion on your machine is Developer or Enterprise. |
| productname | ColdFusion server. |
| productversion | The ColdFusion version that is currently running. |
| rootdir | Directory under which ColdFusion is installed, such as C:\<cfhome> or /opt/<cfhome>/cfusion . |
| supportedlocales | The locales, such as English (US) and Spanish (Standard), supported by the server. |
| updatelevel | The current update (hotfix) level applied to the installed version of ColdFusion. |
<cfscript>
val=server.os
writeDump(val)
</cfscript>| Variable | Description |
| additionalinformation | The OS on which ColdFusion is installed. |
| arch | The processor architecture, such as x64 or ARM. |
| buildnumber | The expiration date of ColdFusion license. |
| name | The name of the OS where ColdFusion is running. |
| version | The version of the OS. |
<cfscript>
val=server.system.environment
writeDump(val)
</cfscript>
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