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Vulnerability record · CVE-2009-0551 · published 15 April 2009

CVE-2009-0551: Microsoft internet explorer vulnerability

Microsoft · Internet Explorer

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."

8.1 CVSS 3.1 High EPSS 25% · top 2.2% CWE-399 · CWE-399
8.1CVSS 3.1 base score, v2 9.3
25%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
18References
16 Jun 2026Last modified by NVD

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."

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://osvdb.org/53624
http://secunia.com/advisories/34678
http://support.avaya.com/elmodocs2/security/ASA-2009-133.htm
http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=871138
http://www.securitytracker.com/id?1022042
http://www.us-cert.gov/cas/techalerts/TA09-104A.html US Government Resource
http://www.vupen.com/english/advisories/2009/1028
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-014
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6164
http://osvdb.org/53624
http://secunia.com/advisories/34678
http://support.avaya.com/elmodocs2/security/ASA-2009-133.htm
http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=871138
http://www.securitytracker.com/id?1022042
http://www.us-cert.gov/cas/techalerts/TA09-104A.html US Government Resource
http://www.vupen.com/english/advisories/2009/1028
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2009/ms09-014
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6164

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Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2009-0551), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.