CVE-2001-1055: Microsoft Windows 98

Medium severity, CVSS 5.0. EPSS: 22.3% chance of exploitation in the next 30 days.

The Microsoft Windows network stack allows remote attackers to cause a denial of service (CPU consumption) via a flood of malformed ARP request packets with random source IP and MAC addresses, as demonstrated by ARPNuke.

Affected products

• Microsoft Windows 98: any version
• Microsoft Windows 98se: any version

Published 2001-07-30. Last modified 2026-06-16.