{"id":"CVE-1999-1201","aliases":["EUVD-1999-1182","GHSA-4j42-4g6h-g8rv"],"status":"published","title":"Windows 95 and Windows 98 systems, when configured with multiple TCP/IP stacks bound to the same...","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.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.13903,"percentile":0.96562,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"1999-02-06T05:00:00Z","modified":"2026-06-16T21:49:56Z","products":[{"vendor":"microsoft","product":"windows_95"},{"vendor":"microsoft","product":"windows_98"}],"references":[{"url":"http://marc.info/?l=ntbugtraq\u0026m=91849617221319\u0026w=2","tags":["mailing-list","x_refsource_NTBUGTRAQ","x_transferred"]},{"url":"http://www.securityfocus.com/bid/225","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/7542","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-1999-1201"},{"url":"https://github.com/advisories/GHSA-4j42-4g6h-g8rv"}],"sources":{"cve":[{"id":"CVE-1999-1201","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.","status":"published","published":"2004-09-01T04:00:00Z","modified":"2024-08-01T17:02:53.884Z","updated_at":"2026-11-02T14:33:53.295018Z"}],"euvd":[{"id":"EUVD-1999-1182","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.","status":"published","published":"2004-09-01T04:00:00Z","modified":"2024-08-01T17:02:53Z","updated_at":"2026-11-03T03:50:43.777799Z"}],"ghsa":[{"id":"GHSA-4j42-4g6h-g8rv","title":"Windows 95 and Windows 98 systems, when configured with multiple TCP/IP stacks bound to the same...","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.","status":"published","published":"2022-04-30T18:12:00Z","modified":"2023-01-30T05:04:42Z","updated_at":"2026-11-02T14:47:06.389944Z"}],"nvd":[{"id":"CVE-1999-1201","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.","status":"published","published":"1999-02-06T05:00:00Z","modified":"2026-06-16T21:49:56.067Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T13:58:30.236077Z"}]}}