The vulnerability, which carries a severity rating of "important," affects Adobe Illustrator CS5 15.0.1 and earlier for Windows.
Here's the gist of the problem:
An important library-loading vulnerability has been identified in Adobe Illustrator CS5 15.0.1 and earlier on the Windows platform. Exploitation of this vulnerability (CVE-2010-3152) could allow an attacker to load arbitrary libraries by tricking a user into opening a file located on a remote WebDAV or SMB share.
Adobe recommends Illustrator CS5 users update their product installations immediately. Instructions on applying the patch are available via this link.