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Vulnerability record · CVE-2008-4800 · published 31 October 2008

CVE-2008-4800: Microsoft debug diagnostic tool vulnerability

Microsoft · Debug Diagnostic Tool

The DebugDiag ActiveX control in CrashHangExt.dll, possibly 1.0, in Microsoft Debug Diagnostic Tool allows remote attackers to cause a denial of service (NULL pointer dereference and Internet Explorer 6.0 crash) via a large negative integer argument to the GetEntryPointForThread method. NOTE: this issue might only be exploitable in limited environments or non-default browser settings.

5.0 CVSS 2.0 Medium EPSS 26% · top 2.1% CWE-399 · CWE-399
5.0CVSS 2.0 base score
26%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 2 tagged exploit
16 Jun 2026Last modified by NVD

Description

The DebugDiag ActiveX control in CrashHangExt.dll, possibly 1.0, in Microsoft Debug Diagnostic Tool allows remote attackers to cause a denial of service (NULL pointer dereference and Internet Explorer 6.0 crash) via a large negative integer argument to the GetEntryPointForThread method. NOTE: this issue might only be exploitable in limited environments or non-default browser settings.

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://securityreason.com/securityalert/4532
http://www.securityfocus.com/archive/1/497943/100/0/threaded
http://www.securityfocus.com/bid/31996 Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/46309
http://securityreason.com/securityalert/4532
http://www.securityfocus.com/archive/1/497943/100/0/threaded
http://www.securityfocus.com/bid/31996 Exploit
https://exchange.xforce.ibmcloud.com/vulnerabilities/46309

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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-2008-4800), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.