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Vulnerability record · CVE-2006-3899 · published 27 July 2006

CVE-2006-3899: Microsoft internet explorer vulnerability

Microsoft · Internet Explorer

Microsoft Internet Explorer 6.0 on Windows XP SP2 allows remote attackers to cause a denial of service (application crash) by calling the stringToBinary function of the CEnroll.CEnroll.2 ActiveX object with a long second argument, which triggers an invalid memory access inside the SysAllocStringLen function.

5.0 CVSS 2.0 Medium EPSS 24% · top 2.2%
5.0CVSS 2.0 base score
24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
10References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

Microsoft Internet Explorer 6.0 on Windows XP SP2 allows remote attackers to cause a denial of service (application crash) by calling the stringToBinary function of the CEnroll.CEnroll.2 ActiveX object with a long second argument, which triggers an invalid memory access inside the SysAllocStringLen function.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

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

References

LinkTags
http://browserfun.blogspot.com/2006/07/mobb-21-cenroll-stringtobinary.html Broken Link
http://www.osvdb.org/27230 Broken Link
http://www.securityfocus.com/bid/19102 ExploitThird Party AdvisoryVDB Entry
http://www.vupen.com/english/advisories/2006/2916 Not Applicable
https://exchange.xforce.ibmcloud.com/vulnerabilities/27884 Third Party AdvisoryVDB Entry
http://browserfun.blogspot.com/2006/07/mobb-21-cenroll-stringtobinary.html Broken Link
http://www.osvdb.org/27230 Broken Link
http://www.securityfocus.com/bid/19102 ExploitThird Party AdvisoryVDB Entry
http://www.vupen.com/english/advisories/2006/2916 Not Applicable
https://exchange.xforce.ibmcloud.com/vulnerabilities/27884 Third Party AdvisoryVDB Entry

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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-2006-3899), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.