CVE-2000-1167: Freebsd

High severity, CVSS 7.5. EPSS: 1.6% chance of exploitation in the next 30 days.

ppp utility in FreeBSD 4.1.1 and earlier does not properly restrict access as specified by the "nat deny_incoming" command, which allows remote attackers to connect to the target system.

Affected products

• Freebsd Freebsd: version 3.5 only; version 3.5.1 only; version 4.0 only; version 4.1 only; version 4.1.1 only

Published 2001-01-09. Last modified 2026-06-16.