CVE-2004-2555: Riverdeep FoolProof Security 3.9.x on Windows 98 and Windows ME uses weak cryptography (arithmetic and XOR...

Security readout for executives and security teams

This is a legacy local password-recovery weakness in Riverdeep FoolProof Security 3.9.x on Windows 98 and Windows ME. A local user who already knows the Control password and password recovery key may be able to derive the Administrator password. Business urgency depends on whether this obsolete software still protects shared, kiosk, school, or lab machines. Exposure is likely limited to legacy Windows 98 or Windows ME systems running Riverdeep FoolProof Security 3.9.x. Systems are most relevant if untrusted local users can interact with the machine and if Control passwords or recovery keys are known, shared, stored insecurely, or recoverable from local administration processes. Treat this as a targeted legacy-system risk. It is not supported by evidence of current mass exploitation, but it can undermine administrative control where old FoolProof-managed machines remain in use. Prioritize discovery and retirement over lengthy remediation work on obsolete platforms. Mitigation focus: Inventory for FoolProof Security 3.9.x on Windows 98 or ME.; Retire or replace affected legacy systems where feasible.; Check vendor or archival advisory guidance before relying on a patch claim..

Prepared

Jun 29, 2026, 16:46 UTC (UTC+00:00)

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