Cisco WebEx Centers Username Enumeration Information Disclosure Vulnerability
A vulnerability in web interface of the Cisco Webex Event Center, Cisco Webex Meeting Center, Cisco Webex Support Center, and Cisco Webex Training Center could allow an unauthenticated, remote attacker to guess account usernames.
The vulnerability is due to missing CAPTCHA protection in certain URLs. An attacker could exploit this vulnerability … Read More here
Source:: Cisco Security Advisories