CVE-2001-1459: OpenBSD OpenSSH

High severity, CVSS 7.5. EPSS: 2.2% chance of exploitation in the next 30 days.

OpenSSH 2.9 and earlier does not initiate a Pluggable Authentication Module (PAM) session if commands are executed with no pty, which allows local users to bypass resource limits (rlimits) set in pam.d.

Affected products

• OpenBSD OpenSSH: version 2.1 only; version 2.1.1 only; version 2.2 only; version 2.3 only; version 2.5 only; version 2.5.1 only; …

Published 2001-06-19. Last modified 2026-06-16.