CVE-2007-1792: libdayzero.dll in the Filter Hub Service (filter-hub.exe) in Symantec Mail Security for SMTP before 5.0.1 P...

Security readout for executives and security teams

This flaw can let a remote sender crash Symantec’s mail security filtering service by emailing a specially crafted executable attachment. The likely business impact is denial of service: disrupted mail filtering or gateway availability, not documented data theft or code execution in the supplied sources. Exposure is limited to organizations still running the named legacy Symantec mail security products at affected versions, especially where inbound email attachments are processed by the product. Prioritize if these legacy Symantec mail gateways still handle inbound mail. For current unsupported deployments, remediation should be part of replacement planning because the issue can disrupt mail security availability. Mitigation focus: Upgrade Symantec Mail Security for SMTP to 5.0.1 Patch 181 or later.; Upgrade Mail Security Appliance to 5.0.0-36 or later.; Check current Symantec/Broadcom guidance for supported replacement or maintenance options..

Prepared

Jun 29, 2026, 04:47 UTC (UTC+00:00)

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