What’s Vulnerable › Vulnerabilities

CVE-2011-0657

• Severity: high (CVSS 7.5 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 62.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2011-04-13 · updated 2026-06-16
• Weakness: CWE-20

Description

DNSAPI.dll in the DNS client in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP1 and SP2, Windows Server 2008 Gold, SP2, R2, and R2 SP1, and Windows 7 Gold and SP1 does not properly process DNS queries, which allows remote attackers to execute arbitrary code via (1) a crafted LLMNR broadcast query or (2) a crafted application, aka "DNS Query Vulnerability."

Affected products

• Microsoft Windows 2003 Server: all versions
• Microsoft Windows 7: all versions
• Microsoft Windows Server 2003: all versions
• Microsoft Windows Server 2008: r2
• Microsoft Windows Vista: all versions
• Microsoft Windows XP Service Pack 3: all versions

References

• http://osvdb.org/71780
• http://secunia.com/advisories/44161
• http://www.securityfocus.com/bid/47242
• http://www.securitytracker.com/id?1025332
• http://www.us-cert.gov/cas/techalerts/TA11-102A.html
• http://www.vupen.com/english/advisories/2011/0948
• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-030
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11902
• http://osvdb.org/71780
• http://secunia.com/advisories/44161
• http://www.securityfocus.com/bid/47242
• http://www.securitytracker.com/id?1025332

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