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Vulnerability record · CVE-2004-2434 · published 31 December 2004

CVE-2004-2434: Microsoft ie vulnerability

Microsoft · Ie

Microsoft Internet Explorer 6.0 SP1 allows remote attackers to cause a denial of service (browser crash) via a link with "::{" (colon colon left brace), which triggers a null dereference when the user attempts to save the link using "Save As" and Internet Explorer prepares an error message with an attacker-controlled format string.

5.0 CVSS 2.0 Medium EPSS 33% · top 1.7%
5.0CVSS 2.0 base score
33%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
14References, 8 tagged exploit
16 Jun 2026Last modified by NVD

Description

Microsoft Internet Explorer 6.0 SP1 allows remote attackers to cause a denial of service (browser crash) via a link with "::{" (colon colon left brace), which triggers a null dereference when the user attempts to save the link using "Save As" and Internet Explorer prepares an error message with an attacker-controlled format string.

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://archives.neohapsis.com/archives/fulldisclosure/2004-06/0397.html ExploitVendor Advisory
http://archives.neohapsis.com/archives/fulldisclosure/2004-06/0428.html
http://archives.neohapsis.com/archives/fulldisclosure/2004-07/1126.html
http://securitytracker.com/id?1010491 ExploitVendor Advisory
http://www.osvdb.org/8335 Exploit
http://www.securiteam.com/windowsntfocus/5IP020KDPU.html ExploitVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/16420
http://archives.neohapsis.com/archives/fulldisclosure/2004-06/0397.html ExploitVendor Advisory
http://archives.neohapsis.com/archives/fulldisclosure/2004-06/0428.html
http://archives.neohapsis.com/archives/fulldisclosure/2004-07/1126.html
http://securitytracker.com/id?1010491 ExploitVendor Advisory
http://www.osvdb.org/8335 Exploit
http://www.securiteam.com/windowsntfocus/5IP020KDPU.html ExploitVendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/16420

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Related vulnerabilities

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

10.0CVE-2007-0219Microsoft internet explorer vulnerabilityMicrosoft Internet Explorer 5.01, 6, and 7 uses certain COM objects from (1) Msb1fren.dll, (2) Htmlmm.ocx, and (3) Blnmgrps.dll as ActiveX controls, …EPSS 39%10.0CVE-2007-0217Internet Explorer wininet.dll FTP client heap corruptionThe FTP client code in wininet.dll, used by Microsoft Internet Explorer 5.01 and 6, mishandles an FTP server response of a specific length, writing a…EPSS 58%analysed10.0CVE-2006-1186Internet Explorer ActiveX COM object instantiation memory corruptionInternet Explorer 5.01 through 6 allows remote attackers to execute arbitrary code by instantiating the Mdt2gddr.dll, Mdt2dd.dll, and Mdt2gddo.dll CO…EPSS 58%analysed10.0CVE-2004-0985Microsoft ie vulnerabilityInternet Explorer 6.x on Windows XP SP2 allows remote attackers to execute arbitrary code, as demonstrated using a document with a draggable file typ…EPSS 20%10.0CVE-2004-1050Internet Explorer 6 heap overflow via IFRAME, FRAME and EMBED attributesInternet Explorer 6 contains a heap-based buffer overflow triggered by long SRC or NAME attributes in IFRAME, FRAME and EMBED elements. A remote atta…EPSS 67%analysed10.0CVE-2004-0216Internet Explorer Install Engine integer overflow enables remote code executionThe Install Engine (inseng.dll) in Internet Explorer 5.01, 5.5, and 6 contains an integer overflow when calculating a buffer length for a long .CAB f…EPSS 49%analysed10.0CVE-2004-0212Windows Task Scheduler .job file stack buffer overflowThe Windows Task Scheduler in Windows 2000 and XP, and Internet Explorer 6 on Windows NT 4.0, contains a stack-based buffer overflow triggered by a .…EPSS 64%analysed10.0CVE-2004-0420Windows Shell CLSID filename spoofing allows remote code executionThe Windows Shell trusts a CLSID specifier embedded in a filename, letting a remote attacker spoof the file type and cause arbitrary code execution. …EPSS 46%analysed

Source: NIST National Vulnerability Database (record CVE-2004-2434), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.