CVE 2008-1189
Buffer overflow in Java Web Start in Sun JDK and JRE 6 Update 4 and earlier, 5.0 Update 14 and earlier, and SDK/JRE 1.4.2_16 and earlier allows remote attackers to execute arbitrary code via unknown vectors, a different issue than CVE-2008-1188, aka the "third" issue.
See the 
CVE page on Mitre.org
for more details.
