CVE-2003-0109

CVE-2003-0109 is a high-severity vulnerability in Microsoft Windows 2000 with a CVSS 2.0 base score of 7.5. Its EPSS exploit-prediction score of 86% places it in the 100th percentile, indicating an elevated likelihood of exploitation.

Key facts

Description

Buffer overflow in ntdll.dll on Microsoft Windows NT 4.0, Windows NT 4.0 Terminal Server Edition, Windows 2000, and Windows XP allows remote attackers to execute arbitrary code, as demonstrated via a WebDAV request to IIS 5.0.

Frequently asked questions

What is CVE-2003-0109?
Buffer overflow in ntdll.dll on Microsoft Windows NT 4.0, Windows NT 4.0 Terminal Server Edition, Windows 2000, and Windows XP allows remote attackers to execute arbitrary code, as demonstrated via a WebDAV request to IIS 5.0.
How severe is CVE-2003-0109?
CVE-2003-0109 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2003-0109 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 86% (100th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2003-0109?
CVE-2003-0109 primarily affects Microsoft Windows 2000. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2003-0109?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2003-0109 published?
CVE-2003-0109 was published on 2003-03-31 and last updated on 2026-06-16.

References

Affected products (8)

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