This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Adobe Reader. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the improper bounds checking of a U3D PCX external texture. The application performs insufficient bounds checking on user supplied data passed in which results in a heap buffer overflow. An attacker can leverage this situation to execute code under the context of the user running the process.