Multiple SQL injection vulnerabilities in NetClassifieds Premium Edition 1.0.1, Professional Edition 1.5.1, Standard Edition 1.9.6.3, and Free Edition 1.0.1 allow remote attackers to execute arbitrary SQL commands via the (1) CatID parameter in (a) ViewCat.php and (b) gallery.php, and the (2) ItemNum parameter in (c) ViewItem.php.