CVE-1999-1578: Microsoft Internet Explorer

Medium severity, CVSS 5.1. EPSS: 19.4% chance of exploitation in the next 30 days.

Buffer overflow in Registration Wizard ActiveX control (regwizc.dll, InvokeRegWizard) 3.0.0.0 for Internet Explorer 4.01 and 5 allows remote attackers to execute arbitrary commands.

Affected products

• Microsoft Internet Explorer: version 4.0.1 only; version 5.0 only

Published 1999-09-24. Last modified 2026-06-16.