Cisco Security Advisory Cisco Webex Meetings Enumeration Attack Informational Advisory ID: cisco-sa-20191001-webex-enum First Published: 2019 October 1 13:00 GMT Version 1.0: Final Workarounds: Yes. The issue described in this advisory affects Cisco WebEx Meetings. Products Confirmed Not Vulnerable Only products listed in the Vulnerable Products section of this advisory are known to be affected by this attack method. Cisco recommends that administrators maintain their sites with the default configuration that makes using a password mandatory when users are setting up a meeting.”]
Source: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20191001-webex-enum