CVE-2006-5614: Microsoft Windows Nt Helper Components

Low severity, CVSS 2.6. EPSS: 79.6% chance of exploitation in the next 30 days.

Microsoft Windows NAT Helper Components (ipnathlp.dll) on Windows XP SP2, when Internet Connection Sharing is enabled, allows remote attackers to cause a denial of service (svchost.exe crash) via a malformed DNS query, which results in a null pointer dereference.

Affected products

• Microsoft Windows Nt Helper Components: any version
• Microsoft Windows XP: any version

Published 2006-10-31. Last modified 2026-06-16.