This indicates an attack attempt to exploit a Remote Command Execution vulnerability in Palo Alto Networks Firewall Web Management Interface.
The vulnerability is due to insufficient sanitization of user supplied inputs. A remote attacker may be able to exploit this to execute arbitrary commands within the context of the application, via a crafted HTTP request.
PAN-OS 6.1.18 and earlier
PAN-OS 7.0.18 and earlier
PAN-OS 7.1.13 and earlier
PAN-OS 8.0.5 and earlier
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.