CVE-1999-0821: Freebsd

Medium severity, CVSS 4.6. EPSS: 0.8% chance of exploitation in the next 30 days.

FreeBSD seyon allows local users to gain privileges by providing a malicious program in the -emulator argument.

Affected products

• Freebsd Freebsd: version 3.3 only

Published 1999-11-08. Last modified 2026-06-16.