CVE-1999-1201

Medium CVSS 5

Published 1999-02-06 · last changed 2026-06-16

The fix

We hold no Microsoft remediation data for CVE-1999-1201, which normally means it is not a Windows CVE. For non-Microsoft software the fix is the vendor's own updated release, and the affected versions are listed below.

What it is

Windows 95 and Windows 98 systems, when configured with multiple TCP/IP stacks bound to the same MAC address, allow remote attackers to cause a denial of service (traffic amplification) via a certain ICMP echo (ping) packet, which causes all stacks to send a ping response, aka TCP Chorusing.

Sources

NVD record for CVE-1999-1201

CVSS vector: AV:N/AC:L/Au:N/C:N/I:N/A:P