CVE-2006-5229: OpenSSH portable 4.1 on SUSE Linux, and possibly other platforms and versions, and possibly under limited c...

Security readout for executives and security teams

This older OpenSSH issue can let a remote observer infer whether a username exists by measuring response timing. The public record ties it mainly to OpenSSH portable 4.1 on SUSE Linux and possibly limited configurations. It is not listed in KEV, and the source bundle does not provide CVSS severity or confirmed broad exploitation. Exposure is most plausible on legacy SUSE Linux systems running OpenSSH portable 4.1, especially where SSH is remotely reachable and password processing matches the described configuration. The source bundle does not confirm all affected platforms or versions. Handle during legacy-system risk reduction unless the affected SSH service is internet-facing or protects sensitive environments. The issue helps attackers identify valid accounts, which can support credential attacks, but the evidence does not show direct compromise or active exploitation. Mitigation focus: Inventory internet-facing SSH services and identify OpenSSH portable 4.1 on SUSE Linux.; Check SUSE and OpenSSH guidance for supported packages and any applicable correction.; Migrate legacy SSH services to vendor-supported OpenSSH packages..

Prepared

Jun 29, 2026, 10:06 UTC (UTC+00:00)

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