This indicates an attack attempt to exploit a Buffer Overflow vulnerability in Adobe Photoshop.
The vulnerability is due to an error while parsing LZW data inside TIFF files with the raw plug-in. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted TIFF file.
Adobe Systems Adobe Photoshop CS6 13.x
Adobe Systems Bridge CS6 5.x
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply patch from vendor, available from the website: