{"id":"CVE-2009-0551","url":"https://www.cyber-defence.io/tools/cve/CVE-2009-0551","generatedAt":"2026-10-27T20:51:38.005Z","title":"Microsoft Internet Explorer 6 SP1, 6 and 7 on Windows XP SP2 and SP3, 6 and 7 on Windows Server 2003 SP1 and SP2, 7 on Windows Vista Gold and SP1, and 7 on Windows Server 2008 does not properly handle transition errors in a request for one HTTP document…","description":"Microsoft Internet Explorer 6 SP1, 6 and 7 on Windows XP SP2 and SP3, 6 and 7 on Windows Server 2003 SP1 and SP2, 7 on Windows Vista Gold and SP1, and 7 on Windows Server 2008 does not properly handle transition errors in a request for one HTTP document followed by a request for a second HTTP document, which allows remote attackers to execute arbitrary code via vectors involving (1) multiple crafted pages on a web site or (2) a web page with crafted inline content such as banner advertisements, aka \"Page Transition Memory Corruption Vulnerability.\"","published":"2009-04-15T08:00:01.000Z","lastModified":"2026-06-16T23:05:17.000Z","status":"Modified","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.1","score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-399"],"affected":["microsoft/internet explorer"],"epss":{"score":0.24915,"percentile":0.97896,"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 24.9%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://osvdb.org/53624","source":"secure@microsoft.com"},{"url":"http://secunia.com/advisories/34678","source":"secure@microsoft.com"},{"url":"http://support.avaya.com/elmodocs2/security/ASA-2009-133.htm","source":"secure@microsoft.com"},{"url":"http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=871138","source":"secure@microsoft.com"},{"url":"http://www.securitytracker.com/id?1022042","source":"secure@microsoft.com"},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-104A.html","tags":["US Government Resource"],"source":"secure@microsoft.com"},{"url":"http://www.vupen.com/english/advisories/2009/1028","source":"secure@microsoft.com"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-014","source":"secure@microsoft.com"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6164","source":"secure@microsoft.com"},{"url":"http://osvdb.org/53624","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://secunia.com/advisories/34678","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://support.avaya.com/elmodocs2/security/ASA-2009-133.htm","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=871138","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.securitytracker.com/id?1022042","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.us-cert.gov/cas/techalerts/TA09-104A.html","tags":["US Government Resource"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.vupen.com/english/advisories/2009/1028","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-014","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6164","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-0551","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."}