This indicates an attack attempt to exploit a Command Injection vulnerability in Cisco Webex Meeting Destop App for Windows.
The vulnerability is due to insufficient sanitizing of user supplied inputs in the application. A remote attacker can exploit this by sending a crafted SMB query to execute arbitrary commands on a vulnerable server.
Cisco Webex Meetings Desktop App version 33.5.5 and prior
System Compromise: Remote attackers can gain control of vulnerable systems.
Apply the most recent upgrade or patch from the vendor.