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CVE-2011-1871

7.8 · HIGH

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…

Published Aug 10, 2011microsoftCWE-399EPSS 38.46%

Overview

CVE-2011-1871 is a high-severity vulnerability affecting microsoft windows_7. It was published on August 10, 2011 and has a CVSS 2.0 base score of 7.8 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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."

Remediation

Check the references section for vendor advisories and patches from microsoft. Update windows_7 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refwww.us-cert.gov/cas/techalerts/TA11-221A.htmlRefdocs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-064Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12971Refwww.us-cert.gov/cas/techalerts/TA11-221A.htmlRefdocs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-064Refoval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12971

How CyberStrike helps

Frequently asked questions

What is CVE-2011-1871?

CVE-2011-1871 is a high-severity vulnerability affecting microsoft windows_7. It was published on August 10, 2011 and has a CVSS 2.0 base score of 7.8 (HIGH).

How severe is CVE-2011-1871?

This vulnerability has a CVSS 2.0 base score of 7.8, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-1871?

Check the references section for vendor advisories and patches from microsoft. Update windows_7 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-1871?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-1871 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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