CVE-2003-1562: OpenBSD OpenSSH

High severity, CVSS 7.6. EPSS: 5.6% chance of exploitation in the next 30 days.

sshd in OpenSSH 3.6.1p2 and earlier, when PermitRootLogin is disabled and using PAM keyboard-interactive authentication, does not insert a delay after a root login attempt with the correct password, which makes it easier for remote attackers to use timing differences to determine if the password step of a multi-step authentication is successful, a different vulnerability than CVE-2003-0190.

Affected products

• OpenBSD OpenSSH: version 1.2 only; version 1.2.1 only; version 1.2.2 only; version 1.2.3 only; version 1.2.27 only; version 1.3 only; …

Published 2003-12-31. Last modified 2026-06-16.