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Tool Directory

CVE-2011-1965

HighPublished

Tcpip.sys in the TCP/IP stack in Microsoft Windows 7 Gold and SP1 and Windows Server 2008 R2 and R2 SP1 does not properly implement URL-based QoS, which...

Published: Aug 10, 2011
Updated: Aug 6, 2024
Assigning CNA: microsoft
Evidence observed: Oct 15, 2011

Primary CVSS

7.1/ 10High

nvd · CVSS 2.0

AV:N/AC:M/Au:N/C:N/I:N/A:C

EPSS probability estimate

24.9%

Moderate · next 30 days

Percentile: 97.9%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Tcpip.sys in the TCP/IP stack in Microsoft Windows 7 Gold and SP1 and Windows Server 2008 R2 and R2 SP1 does not properly implement URL-based QoS, which allows remote attackers to cause a denial of service (reboot) via a crafted URL to a web server, aka "TCP/IP QOS Denial of Service Vulnerability."

Sources

Microsoft Windows - TCP/IP Stack Denial of Service (MS11-064)Exploit
Byoungyoung Lee · windows · Oct 15, 2011

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