What’s Vulnerable › Vulnerabilities

CVE-2011-1966

• Severity: critical (CVSS 10.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 55.2% 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-20

Description

The DNS server in Microsoft Windows Server 2008 SP2, R2, and R2 SP1 does not properly handle NAPTR queries that trigger recursive processing, which allows remote attackers to execute arbitrary code via a crafted query, aka "DNS NAPTR Query Vulnerability."

Affected products

• Microsoft Windows Server 2008: r2

References

• http://www.us-cert.gov/cas/techalerts/TA11-221A.html
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-058
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12764
• http://www.us-cert.gov/cas/techalerts/TA11-221A.html
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-058
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12764

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