What’s Vulnerable › Vulnerabilities

CVE-2011-1871

• Severity: high (CVSS 7.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 38.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2011-08-10 · updated 2026-06-16
• Weakness: CWE-399

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."

Affected products

• Microsoft Windows 7: all versions
• Microsoft Windows Server 2008: r2
• Microsoft Windows Vista: all versions

References

• http://www.us-cert.gov/cas/techalerts/TA11-221A.html
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-064
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12971
• http://www.us-cert.gov/cas/techalerts/TA11-221A.html
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-064
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12971

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