windows 7 is definitely affected ya need to go here and download the security only update Microsoft Update Catalog for 64bit windows 7 use the highlighted update shown below the 64bit update is 100.5MB for 32bit windows 7 use the highlighted update shown here the 32bit update is 72.3MB
the XP fix is here [ posted in the other thread ] the 2003 fix is also there https://support.microsoft.com/en-us/help/4500705/customer-guidance-for-cve-2019-0708