CVE-1999-0656: Linux Kernel

Medium severity, CVSS 5.0. EPSS: 1.6% chance of exploitation in the next 30 days.

The ugidd RPC interface, by design, allows remote attackers to enumerate valid usernames by specifying arbitrary UIDs that ugidd maps to local user and group names.

Affected products

• Linux Linux Kernel: any version

Published 1999-01-01. Last modified 2026-06-16.