CVE-1999-0918: Microsoft Windows 2000

High severity, CVSS 7.8. EPSS: 26.4% chance of exploitation in the next 30 days.

Denial of service in various Windows systems via malformed, fragmented IGMP packets.

Affected products

• Microsoft Windows 2000: any version
• Microsoft Windows 95: any version
• Microsoft Windows 98: any version
• Microsoft Windows Nt: version 4.0 only

Published 1999-07-03. Last modified 2026-06-16.