A version of rusers is running that exposes valid user information to any entity on the network.
https://www.cve.org/CVERecord?id=CVE-1999-0626
Source: Mitre, NVD
Published: 1997-01-01
Updated: 2022-08-17
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Severity: High