CVE-2008-3864: The ApiThread function in the firewall service (aka TmPfw.exe) in Trend Micro Network Security Component (N...

Security readout for executives and security teams

CVE-2008-3864 is a remotely triggerable crash in Trend Micro’s firewall service component. It affects old Trend Micro Network Security Component modules used by OfficeScan 8.0 SP1 Patch 1 and Internet Security 2007/2008. The business impact is denial of endpoint firewall/security service availability, not documented data theft or code execution. Exposure is most likely in legacy environments still running the listed Trend Micro OfficeScan or Internet Security versions with the NSC firewall service active. Modern exposure cannot be inferred from the bundle. Treat this as a legacy exposure cleanup item unless affected products are still protecting business-critical endpoints. Prioritize patching or replacement because failure disables a security service remotely. Mitigation focus: Inventory endpoints and servers for affected Trend Micro OfficeScan and Internet Security versions.; Review Trend Micro’s referenced Critical Patch 3191 readme and apply vendor-supported fixes where applicable.; Retire or isolate unsupported legacy Trend Micro installations if no supported patch path exists..

Prepared

Jun 28, 2026, 11:41 UTC (UTC+00:00)

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