CVE 2007-0046
Double free vulnerability in the Adobe Acrobat Reader Plugin before 8.0.0, as used in Mozilla Firefox 1.5.0.7, allows remote attackers to execute arbitrary code by causing an error via a javascript: URI call to document.write in the (1) FDF, (2) XML, or (3) XFDF AJAX request parameters.
See the 
CVE page on Mitre.org
for more details.
