Is CVE-2003-0109 in the CISA KEV catalog?

No. CVE-2003-0109 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2003-0109?

CVE-2003-0109 has a CVSS v2 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2003-0109?

CVE-2003-0109 has an EPSS score of 86.40% (100th percentile), estimating the probability of exploitation in the next 30 days.

CVE & CISA-KEV Catalog

CVE-2003-0109

HIGHEPSS 100th pctl

7.5

CVSS v2

NVD

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.

CVSS v2 Vector

No CVSS vector data available.

Exploit Intelligence

86.40%probability of exploitation in 30 days

100thpercentile

Very high risk: more likely to be exploited than 100% of all known CVEs.

References

http://marc.info/?l=bugtraq&m=104826476427372&w=2
http://marc.info/?l=bugtraq&m=104861839130254&w=2
http://marc.info/?l=bugtraq&m=104869293619064&w=2
http://marc.info/?l=bugtraq&m=104887148323552&w=2
http://marc.info/?l=bugtraq&m=105768156625699&w=2
http://marc.info/?l=ntbugtraq&m=104826785731151&w=2
http://microsoft.com/downloads/details.aspx?FamilyId=C9A38D45-5145-4844-B62E-C69D32AC929B&displaylang=en
http://support.microsoft.com/default.aspx?scid=kb%3B%5BLN%5D%3BQ815021
http://www.cert.org/advisories/CA-2003-09.html
http://www.iss.net/issEn/delivery/xforce/alertdetail.jsp?oid=22029
http://www.iss.net/security_center/static/11533.php
http://www.kb.cert.org/vuls/id/117394
http://www.nextgenss.com/papers/ms03-007-ntdll.pdf
http://www.securityfocus.com/bid/7116
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2003/ms03-007
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A109

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-16.