This indicates an attack attempt to exploit an Out of Bounds Write Vulnerability in Oracle Outside In Technology.
The vulnerability is due to an error in the vulnerable application when handling a maliciously crafted Excel file. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted Excel file.
Oracle Outside In Technology 8.5.3
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor: