CVE-2009-4556: Quick Heal AntiVirus Plus 2009 10.00 SP1 and Quick Heal Total Security 2009 10.00 SP1 use weak permissions...

Security readout for executives and security teams

Two legacy Quick Heal 2009 security products allowed ordinary local users to fully control product files. An attacker already on a machine could replace trusted antivirus executables and potentially gain higher privileges. This is mainly a legacy endpoint hardening and cleanup risk. Exposure is most likely on old Windows endpoints still running the named Quick Heal 2009 SP1 products. Risk is higher on shared systems or hosts where untrusted local users can log in. Treat this as a legacy-risk cleanup item unless affected products are still present. If found on business endpoints, prioritize removal or upgrade because antivirus compromise can undermine host security controls. Mitigation focus: Inventory endpoints for the named Quick Heal 2009 SP1 products.; Check Quick Heal or vendor guidance for supported upgrade or removal paths.; Retire or replace unsupported legacy antivirus installations where feasible..

Prepared

Jun 28, 2026, 09:59 UTC (UTC+00:00)

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