CVE-2021-1143
A vulnerability in Cisco Connected Mobile Experiences (CMX) API authorizations could allow an authenticated, remote attacker to enumerate what users exist on the system. The vulnerability is due to a lack of authorization checks for certain API GET requests. An attacker could exploit this vulnerability by sending specific API GET requests to an affected device. A successful exploit could allow the attacker to enumerate users of the CMX system.
Source: CVE-2021-1143