This is a ColdFusion UDF to determine if a text string contains any Cyrillic characters. (Returns boolean Yes/No.) The ColdFusion 9 & 10 Regex function doesn't support UTF, so you need to access Java in order to do it.

isCyrillic.cfm

<cfscript>
function isCyrillic(input){
  return javaCast("string", input).matches("(.*)[\u0400-\u04FF](.*)");
  /* Prior method that was used. Slower.
  return createObject("java", "java.util.regex.Pattern").compile(javaCast("string", "[\u0400-\u04FF]")).matcher(javaCast("string", input)).find();
  */
}
</cfscript>