CVE-2004-0445: The SYMDNS.SYS driver in Symantec Norton Internet Security and Professional 2002 through 2004, Norton Perso...

Security readout for executives and security teams

This is an old denial-of-service flaw in Symantec desktop and client security products. A crafted DNS response can make the SYMDNS.SYS driver loop and consume CPU, potentially freezing security software or the host. It is not shown as actively exploited in the supplied sources. Exposure is likely limited to legacy systems still running the listed Symantec products. Environments without those specific products are not implicated by the supplied sources. Asset inventory matters because the affected component is a local driver processing network DNS responses. Treat this as a legacy-risk cleanup item unless affected products remain in production. If they do, prioritize remediation because remote network input can degrade host availability and security controls. Mitigation focus: Identify any systems running the listed Symantec products and versions.; Follow Symantec Security Response guidance for available updates or replacement direction.; Retire or isolate legacy systems that cannot be updated safely..

Prepared

Jun 30, 2026, 05:56 UTC (UTC+00:00)

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