CVE-2005-3657: McAfee Mcinsctl.dll

Medium severity, CVSS 5.0. EPSS: 2.3% chance of exploitation in the next 30 days.

The ActiveX control in MCINSCTL.DLL for McAfee VirusScan Security Center does not use the IObjectSafetySiteLock API to restrict access to required domains, which allows remote attackers to create or append to arbitrary files via the StartLog and AddLog methods in the MCINSTALL.McLog object.

Affected products

• McAfee Mcinsctl.dll: version 4.0.0.83 only
• McAfee Virusscan Security Center: any version; version 4.0 only; version 4.0.3 only; version 4.5 only; version 4.5.1 only; version 5.0 only; …

Published 2005-12-21. Last modified 2026-06-16.