CVE-2006-3725: Symantec Norton Personal Firewall

Low severity, CVSS 2.1. EPSS: 0.4% chance of exploitation in the next 30 days.

Norton Personal Firewall 2006 9.1.0.33 allows local users to cause a denial of service (crash) via certain RegSaveKey, RegRestoreKey and RegDeleteKey operations on the (1) HKLM\SYSTEM\CurrentControlSet\Services\SNDSrvc and (2) HKLM\SYSTEM\CurrentControlSet\Services\SymEvent registry keys.

Affected products

• Symantec Norton Personal Firewall: version 2006_9.1.0.33 only

Published 2006-07-21. Last modified 2026-06-16.