CVE-2003-0386: OpenBSD OpenSSH

High severity, CVSS 7.5. EPSS: 5.8% chance of exploitation in the next 30 days.

OpenSSH 3.6.1 and earlier, when restricting host access by numeric IP addresses and with VerifyReverseMapping disabled, allows remote attackers to bypass "from=" and "user@host" address restrictions by connecting to a host from a system whose reverse DNS hostname contains the numeric IP address.

Affected products

• OpenBSD OpenSSH: version 3.6.1 only

Published 2003-07-02. Last modified 2026-06-16.