Posted from the Adobe Product Security Incident Response Team (PSIRT) site, late last week.....
Adobe is aware of reports of a critical vulnerability in Adobe Reader and Acrobat 9.1.3 and earlier (CVE-2009-3459) on Windows, Macintosh and UNIX. There are reports that this issue is being exploited in the wild in limited targeted attacks; the exploit targets Adobe Reader and Acrobat 9.1.3 on Windows.
We wish to thank Chia-Ching Fang and the Information and Communication Security Technology Center for their help with reporting and investigating this issue (CVE-2009-3459).
We will continue to provide updates on this issue via the Security Advisory section of the Adobe web site, as well as the Adobe PSIRT blog.
Check out the full Blog here