This indicates an attack attempt against a Memory Corruption vulnerability in Adobe Photoshop CC which was discovered by Fortinet's FortiGuard Labs.
The vulnerability is due an out-of-bounds memory access when handling a crafted PCT file. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted PCT file.
Photoshop CC 19.1.8 and earlier for Windows and macOS
Photoshop CC 20.0.5 and earlier for Windows and macOS
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the latest update from the vendor.