CVE-2001-0471: SSH daemon version 1 (aka SSHD-1 or SSH-1) 1.2.30 and earlier does not log repeated login attempts, which c...

Security readout for executives and security teams

This old SSH-1 daemon issue can hide repeated login attempts from logs. An attacker could brute-force accounts with less chance of detection. The main business concern is legacy exposure: any remaining SSHD-1 version 1.2.30 or earlier should be treated as obsolete and risky. Exposure is most likely on legacy Unix-like systems still running SSH-1 or SSHD-1 1.2.30 and earlier. Modern OpenSSH SSH-2 deployments are not identified in the supplied sources as affected. Treat this as a legacy-risk cleanup item unless exposed SSH-1 systems remain internet-accessible. If they do, prioritize remediation because failed brute-force attempts may not appear in logs. Mitigation focus: Check vendor or distribution guidance for SSHD-1 1.2.30 and earlier remediation.; Prioritize retiring SSH-1 services or upgrading to supported SSH software.; Add compensating monitoring for repeated SSH authentication failures at network or PAM layers..

Prepared

Jul 1, 2026, 09:17 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.