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Vulnerability record · CVE-2010-0491 · published 31 March 2010

CVE-2010-0491: Microsoft internet explorer vulnerability

Microsoft · Internet Explorer

Use-after-free vulnerability in Microsoft Internet Explorer 5.01 SP4, 6, and 6 SP1 allows remote attackers to execute arbitrary code by changing unspecified properties of an HTML object that has an onreadystatechange event handler, aka "HTML Object Memory Corruption Vulnerability."

9.3 CVSS 2.0 High EPSS 29% · top 1.9% CWE-399 · CWE-399
9.3CVSS 2.0 base score
29%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
16References
16 Jun 2026Last modified by NVD

Description

Use-after-free vulnerability in Microsoft Internet Explorer 5.01 SP4, 6, and 6 SP1 allows remote attackers to execute arbitrary code by changing unspecified properties of an HTML object that has an onreadystatechange event handler, aka "HTML Object Memory Corruption Vulnerability."

AV:N/AC:M/Au:N/C:C/I:C/A:C

Affected products

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

References

LinkTags
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=864
http://securitytracker.com/id?1023773
http://www.securityfocus.com/bid/39027 Patch
http://www.us-cert.gov/cas/techalerts/TA10-068A.html US Government Resource
http://www.us-cert.gov/cas/techalerts/TA10-089A.html US Government Resource
http://www.vupen.com/english/advisories/2010/0744 PatchVendor Advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-018
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8421
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=864
http://securitytracker.com/id?1023773
http://www.securityfocus.com/bid/39027 Patch
http://www.us-cert.gov/cas/techalerts/TA10-068A.html US Government Resource
http://www.us-cert.gov/cas/techalerts/TA10-089A.html US Government Resource
http://www.vupen.com/english/advisories/2010/0744 PatchVendor Advisory
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-018
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8421

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Related vulnerabilities

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

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Source: NIST National Vulnerability Database (record CVE-2010-0491), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.