You don't need to "do" anything. A list is just a delimited string. So if you want to set those (very poorly named, IMO) variables, it's just a matter of:
<cfset fullList = "10043,10044,10045,10046:2,5,3,1;3453,2167:1,0;2346,8674,9043,7543,6453:0,4,2,0,1">
<cfset varIndex = 0>
<cfloop index="subList" list="#fullList#" delimiters=";">
<cfset "My_list#++varIndex#" = subList>
</cfloop>
<cfdump var="#variables#">
I seriously wouldn't use dynamic variable names like that though, I'd use an array.