CVE-2012-4432
Use-after-free vulnerability in opngreduc.c in OptiPNG Hg and 0.7.x before 0.7.3 might allow remote attackers to execute arbitrary code via unspecified vectors related to "palette reduction."
Date published : 2012-09-30
http://www.securityfocus.com/bid/55566
http://optipng.hg.sourceforge.net/hgweb/optipng/optipng/rev/f1d5d44670a2