{"id":"CVE-2009-2510","url":"https://www.cyber-defence.io/tools/cve/CVE-2009-2510","generatedAt":"2026-10-27T20:42:06.982Z","title":"The CryptoAPI component in Microsoft Windows 2000 SP4, Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista Gold, SP1, and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7, as used by Internet Explorer and other applications, does not…","description":"The CryptoAPI component in Microsoft Windows 2000 SP4, Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista Gold, SP1, and SP2, Windows Server 2008 Gold, SP2, and R2, and Windows 7, as used by Internet Explorer and other applications, does not properly handle a '\\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, aka \"Null Truncation in X.509 Common Name Vulnerability,\" a related issue to CVE-2009-2408.","published":"2009-10-14T10:30:01.000Z","lastModified":"2026-06-16T23:09:37.000Z","status":"Modified","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"2.0","score":6.8,"severity":"MEDIUM","vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P"},"cwe":["CWE-310"],"affected":["microsoft/windows 2000","microsoft/windows 2003 server","microsoft/windows 7","microsoft/windows server 2008","microsoft/windows vista","microsoft/windows xp"],"epss":{"score":0.05321,"percentile":0.9255,"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":"low","text":"Lower severity and a low EPSS score (5.32%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"http://www.networkworld.com/news/2009/073009-more-holes-found-in-webs.html","source":"secure@microsoft.com"},{"url":"http://www.networkworld.com/news/2009/091709-microsoft-ie-security-hole.html","source":"secure@microsoft.com"},{"url":"http://www.securityfocus.com/bid/36475","source":"secure@microsoft.com"},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-286A.html","tags":["US Government Resource"],"source":"secure@microsoft.com"},{"url":"http://www.wired.com/threatlevel/2009/07/kaminsky/","source":"secure@microsoft.com"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-056","source":"secure@microsoft.com"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5842","source":"secure@microsoft.com"},{"url":"http://www.networkworld.com/news/2009/073009-more-holes-found-in-webs.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.networkworld.com/news/2009/091709-microsoft-ie-security-hole.html","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securityfocus.com/bid/36475","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-286A.html","tags":["US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.wired.com/threatlevel/2009/07/kaminsky/","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-056","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5842","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-2510","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."}