Vulnerable component: Zoho ManageEngine ADSelfService Plus
CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C
CWE-ID: CWE-284 - Improper Access Control
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to improper access restrictions to the "/RestAPI/LogonCustomization" and "/RestAPI/Connection" REST API endpoints. A remote non-authenticated attacker can send specially HTTP requests to the aforementioned REST API endpoints and execute arbitrary code on the system.
Note, the vulnerability is being actively exploited in the wild.