CVE-2000-1189: Buffer overflow in pam_localuser PAM module in Red Hat Linux 7.x and 6.x allows attackers to gain privileges.

Security readout for executives and security teams

This is an old privilege-escalation issue in the pam_localuser authentication module reported for Red Hat Linux 6.x and 7.x. A buffer overflow could let an attacker gain higher privileges. The source bundle does not provide CVSS, CWE, detailed prerequisites, or confirmed active exploitation. Most exposure should be limited to obsolete Linux systems or derived environments still using the vulnerable pam_localuser module. Modern supported distributions are unlikely to be affected, but legacy Red Hat Linux 6.x/7.x systems need verification. Prioritize remediation if any legacy Linux systems remain in production, especially shared servers with local users. If the environment has no Red Hat Linux 6.x/7.x or related legacy distributions, business urgency is low after verification. Mitigation focus: Review the referenced vendor advisories for fixed package versions.; Apply the relevant PAM package updates from the operating system vendor.; Retire or isolate unsupported Red Hat Linux 6.x and 7.x systems..

Prepared

Jul 1, 2026, 09:50 UTC (UTC+00:00)

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