CVE-2003-0470: Buffer overflow in the "RuFSI Utility Class" ActiveX control (aka "RuFSI Registry Information Class"), as u...

Security readout for executives and security teams

This old vulnerability affects a Symantec Security Check ActiveX component. If a user with the vulnerable control installed visits attacker-controlled content, the flaw could allow code execution. The practical risk is mainly legacy Windows and Internet Explorer environments where this ActiveX control remains installed or allowed. Exposure is most likely on legacy endpoints that installed the Symantec Security Check ActiveX control and still permit ActiveX execution in browser-based content. Modern environments without that control or without ActiveX support are unlikely to be affected. Treat this as a legacy exposure cleanup item with high impact if present. It is unlikely to affect modern standard builds, but any remaining ActiveX-dependent environment deserves prompt verification because the described outcome is remote code execution. Mitigation focus: Check Symantec or trusted advisory guidance for vendor-confirmed remediation.; Inventory endpoints for the RuFSI ActiveX control and Symantec Security Check remnants.; Remove or disable the vulnerable control where business use is not required..

Prepared

Jun 30, 2026, 10:00 UTC (UTC+00:00)

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