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CVE-2003-0109

82
FAUCET Score

CVE-2003-0109 describes a critical buffer overflow vulnerability in ntdll.dll affecting Microsoft Windows NT 4.0, Windows 2000, and Windows XP. This flaw allows remote attackers to execute arbitrary code, notably demonstrated via WebDAV requests to IIS 5.0. With a CVSS score of 7.5, it represents a high-severity risk, requiring no authentication and low attack complexity for a complete compromise of confidentiality, integrity, and availability. Exploit code is publicly available through Metasploit and ExploitDB, indicating a high likelihood of exploitation, despite limited community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2000:*:*:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2000:*:sp1:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2000:*:sp2:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2000:*:sp3:*:*:*:*:*:*
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:microsoft:windows_2000_terminal_services:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.5HIGH

AV:N/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
10.0
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
85.68%
Probability of exploitation in next 30 days
EPSS Percentile
99.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Metasploit: MS03-007 Microsoft IIS 5.0 WebDAV ntdll.dll Path Overflow · May 30, 2003
ExploitDB: EDB-16470 · Jul 25, 2010
This CVE's current EPSS score of 0.8568 is in the 100th percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

marc.info
marc.info
marc.info
marc.info
marc.info
marc.info
microsoft.com / downloads/details.aspx
docs.microsoft.com / en-us/security-updates/securitybulletins/2003/ms03-007
oval.cisecurity.org / repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A109
support.microsoft.com / default.aspx
cert.org / advisories/CA-2003-09.html
PatchThird Party AdvisoryUS Government Resource
iss.net / issEn/delivery/xforce/alertdetail.jsp
PatchVendor Advisory
iss.net / security_center/static/11533.php
PatchVendor Advisory
kb.cert.org / vuls/id/117394
US Government Resource
nextgenss.com / papers/ms03-007-ntdll.pdf
securityfocus.com / bid/7116
ExploitPatchVendor Advisory