{"id":"CVE-2009-0234","url":"https://www.cyber-defence.io/tools/cve/CVE-2009-0234","generatedAt":"2026-10-27T20:53:26.938Z","title":"The DNS Resolver Cache Service (aka DNSCache) in Windows DNS Server in Microsoft Windows 2000 SP4, Server 2003 SP1 and SP2, and Server 2008 does not properly cache crafted DNS responses, which makes it easier for remote attackers to predict transaction…","description":"The DNS Resolver Cache Service (aka DNSCache) in Windows DNS Server in Microsoft Windows 2000 SP4, Server 2003 SP1 and SP2, and Server 2008 does not properly cache crafted DNS responses, which makes it easier for remote attackers to predict transaction IDs and poison caches by sending many crafted DNS queries that trigger \"unnecessary lookups,\" aka \"DNS Server Response Validation Vulnerability.\"","published":"2009-03-11T14:19:15.000Z","lastModified":"2026-06-16T23:04:33.000Z","status":"Modified","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"2.0","score":6.4,"severity":"MEDIUM","vector":"AV:N/AC:L/Au:N/C:N/I:P/A:P"},"cwe":["CWE-20"],"affected":["microsoft/windows 2000","microsoft/windows server 2003","microsoft/windows server 2008"],"epss":{"score":0.34442,"percentile":0.98403,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 34.4%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://blogs.technet.com/srd/archive/2009/03/13/ms09-008-dns-and-wins-server-security-update-in-more-detail.aspx","source":"secure@microsoft.com"},{"url":"http://osvdb.org/52518","source":"secure@microsoft.com"},{"url":"http://secunia.com/advisories/34217","source":"secure@microsoft.com"},{"url":"http://support.avaya.com/elmodocs2/security/ASA-2009-083.htm","source":"secure@microsoft.com"},{"url":"http://www.kb.cert.org/vuls/id/319331","tags":["US Government Resource"],"source":"secure@microsoft.com"},{"url":"http://www.securityfocus.com/bid/33988","source":"secure@microsoft.com"},{"url":"http://www.securitytracker.com/id?1021831","source":"secure@microsoft.com"},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-069A.html","tags":["US Government Resource"],"source":"secure@microsoft.com"},{"url":"http://www.vupen.com/english/advisories/2009/0661","source":"secure@microsoft.com"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-008","source":"secure@microsoft.com"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5715","source":"secure@microsoft.com"},{"url":"http://blogs.technet.com/srd/archive/2009/03/13/ms09-008-dns-and-wins-server-security-update-in-more-detail.aspx","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://osvdb.org/52518","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/34217","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://support.avaya.com/elmodocs2/security/ASA-2009-083.htm","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.kb.cert.org/vuls/id/319331","tags":["US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/33988","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id?1021831","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-069A.html","tags":["US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2009/0661","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-008","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5715","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-0234","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}