{"id":"CVE-2011-1871","aliases":["EUVD-2011-1869","GHSA-99xj-9xhx-pcp4"],"status":"published","title":"Tcpip.sys in the TCP/IP stack in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2...","description":"Tcpip.sys in the TCP/IP stack in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to cause a denial of service (reboot) via a series of crafted ICMP messages, aka \"ICMP Denial of Service Vulnerability.\"","severity":{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.38461,"percentile":0.98581,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-399"],"published":"2011-08-10T21:16:00Z","modified":"2026-06-16T23:30:16Z","products":[{"vendor":"microsoft","product":"windows_7"},{"vendor":"microsoft","product":"windows_server_2008"},{"vendor":"microsoft","product":"windows_vista"}],"references":[{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12971","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"]},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-064","tags":["vendor-advisory","x_refsource_MS","x_transferred"]},{"url":"http://www.us-cert.gov/cas/techalerts/TA11-221A.html","tags":["third-party-advisory","x_refsource_CERT","x_transferred","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2011-1871"},{"url":"https://github.com/advisories/GHSA-99xj-9xhx-pcp4"}],"sources":{"cve":[{"id":"CVE-2011-1871","description":"Tcpip.sys in the TCP/IP stack in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to cause a denial of service (reboot) via a series of crafted ICMP messages, aka \"ICMP Denial of Service Vulnerability.\"","status":"published","published":"2011-08-10T21:16:00Z","modified":"2024-08-06T22:46:00.718Z","updated_at":"2026-11-02T14:35:38.321377Z"}],"euvd":[{"id":"EUVD-2011-1869","description":"Tcpip.sys in the TCP/IP stack in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to cause a denial of service (reboot) via a series of crafted ICMP messages, aka \"ICMP Denial of Service Vulnerability.\"","status":"published","published":"2011-08-10T21:16:00Z","modified":"2024-08-06T22:46:00Z","updated_at":"2026-11-03T01:55:54.666744Z"}],"ghsa":[{"id":"GHSA-99xj-9xhx-pcp4","title":"Tcpip.sys in the TCP/IP stack in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2...","description":"Tcpip.sys in the TCP/IP stack in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to cause a denial of service (reboot) via a series of crafted ICMP messages, aka \"ICMP Denial of Service Vulnerability.\"","status":"published","published":"2022-05-13T01:15:30Z","modified":"2023-02-01T05:04:33Z","updated_at":"2026-11-02T14:50:09.90532Z"}],"nvd":[{"id":"CVE-2011-1871","description":"Tcpip.sys in the TCP/IP stack in Microsoft Windows Vista SP2, Windows Server 2008 SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 allows remote attackers to cause a denial of service (reboot) via a series of crafted ICMP messages, aka \"ICMP Denial of Service Vulnerability.\"","status":"published","published":"2011-08-10T21:55:01.187Z","modified":"2026-06-16T23:30:16.71Z","cvss":[{"version":"2.0","score":7.8,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:C","level":"high","assessor":"primary"}],"cwes":["CWE-399"],"updated_at":"2026-11-02T14:02:09.182398Z"}]}}