CVE-2008-3866: Trend Micro Internet Security 2007

Medium severity, CVSS 4.6. EPSS: 0.4% chance of exploitation in the next 30 days.

The Trend Micro Personal Firewall service (aka TmPfw.exe) in Trend Micro Network Security Component (NSC) modules, as used in Trend Micro OfficeScan 8.0 SP1 Patch 1 and Internet Security 2007 and 2008 17.0.1224, relies on client-side password protection implemented in the configuration GUI, which allows local users to bypass intended access restrictions and change firewall settings by using a modified client to send crafted packets.

Affected products

• Trend Micro Internet Security 2007: any version
• Trend Micro Internet Security 2008: version 17.0.1224 only
• Trend Micro OfficeScan: version 8.0 only

Published 2009-01-21. Last modified 2026-06-16.