Microsoft is also working to update the JVM it makes available for download for the Windows XP operating system.
Following a legal dispute with Java creator Sun Microsystems, Microsoft chose not to include a JVM with Windows XP, but computer makers such as Dell and Compaq preload the software for users on new machines.
So if you added the JVM or you got XP preloaded from Dell or Compaq (or others), yes, XP is also affected.