CVE-1999-0420: Netbsd Umapfs

High severity, CVSS 7.2. EPSS: 0.4% chance of exploitation in the next 30 days.

umapfs allows local users to gain root privileges by changing their uid through a malicious mount_umap program.

Affected products

• Netbsd Umapfs: any version

Published 1999-03-17. Last modified 2026-06-16.