While Adobe did resolve the vulnerabilities addressed in the security bulletin you are referencing below (APSB12-11) in the Adobe Photoshop CS6 major release, no dot release was scheduled or released for Adobe Photoshop CS5 or CS5.5. In looking at all aspects, including the vulnerabilities themselves and the threat landscape, the team did not believe the real-world risk to customers warranted an out-of-band release for the CS5 and CS5.5 versions to resolve these issues. The security bulletin for Photoshop is rated as a Priority 3 update, indicating that it is a product that has historically not been a target for attackers, and in this case we are not aware of any exploits targeting any of the issues fixed. Installation of the upgrade is therefore at the user’s/administrator’s discretion.