How severe is CVE-2008-4800?

CVE-2008-4800 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2008-4800 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 26% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2008-4800?

CVE-2008-4800 affects Microsoft Debug Diagnostic Tool. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2008-4800?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2008-4800 published?

CVE-2008-4800 was published on 2008-10-31 and last updated on 2026-06-16.

CVE-2008-4800

CVE-2008-4800 is a medium-severity vulnerability in Microsoft Debug Diagnostic Tool with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 26% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-399.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 26% (98th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-399
Affected product: Microsoft Debug Diagnostic Tool
Published: 2008-10-31
Last modified: 2026-06-16

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.

Frequently asked questions

What is CVE-2008-4800?: 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.
How severe is CVE-2008-4800?: CVE-2008-4800 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-2008-4800 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 26% (98th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2008-4800?: CVE-2008-4800 affects Microsoft Debug Diagnostic Tool. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2008-4800?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2008-4800 published?: CVE-2008-4800 was published on 2008-10-31 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:microsoft:debug_diagnostic_tool:*:*:*:*:*:*:*:*

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