This indicates an attempt to exploit a remote Code Execution vulnerability in Adobe Photoshop.
The vulnerability is caused by an error that occurs when parsing a crafted ".ASL", ".ABR" or ".GRD" file. A remote attacker may exploit this to execute arbitrary code.
Adobe Photoshop CS4 version 11.0.1 and earlier for Windows and Macintosh
Adobe Photoshop Elements 8.0
Adobe Photoshop Elements 7.0
System Compromise: Remote attackers can gain control of vulnerable systems.
Refer to the vendor's web site for the suggested workaround: