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Vulnerability record · CVE-1999-1201 · published 6 February 1999

CVE-1999-1201: Microsoft windows 95 vulnerability

Microsoft · Windows 95

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.

5.0 CVSS 2.0 Medium EPSS 14% · top 3.6%
5.0CVSS 2.0 base score
14%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
6References
16 Jun 2026Last modified by NVD

Description

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.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://marc.info/?l=ntbugtraq&m=91849617221319&w=2
http://www.securityfocus.com/bid/225
https://exchange.xforce.ibmcloud.com/vulnerabilities/7542
http://marc.info/?l=ntbugtraq&m=91849617221319&w=2
http://www.securityfocus.com/bid/225
https://exchange.xforce.ibmcloud.com/vulnerabilities/7542

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-1999-1201), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.