CVE-2003-0352
HighExploitedPublic exploitBuffer overflow in a certain DCOM interface for RPC in Microsoft Windows NT 4.0, 2000, XP, and Server 2003 allows remote attackers to execute arbitrary code via a malformed message, as exploited by the Blaster/MSblast/LovSAN and Nachi/Welchia worms.
Published Aug 18, 2003 · Updated Apr 15, 2026
Key Facts
Patch immediately- CVE-2003-0352 is a high-severity vulnerability (CVSS 7.5 v2) affecting Windows 2000 (Microsoft), Windows 2003 Server (Microsoft), Windows Nt (Microsoft) and 1 more product.
- It is exploited in the wild, listed in Industry KEV feed since Sep 7, 2007. Public exploit code is available.
- EPSS estimates a 98% probability of exploitation in the next 30 days.
- No fixed version is listed yet; check the vendor advisory for mitigations.
- Brandefense priority: patch immediately, because it is listed as exploited in the wild.
CVSS v2
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS (30-day exploit likelihood)
98%
Higher than 99.9% of all scored CVEs
Exploited in the wild
Yes
1 catalog listing
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2003-0352 brief as a PDF
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Description
Buffer overflow in a certain DCOM interface for RPC in Microsoft Windows NT 4.0, 2000, XP, and Server 2003 allows remote attackers to execute arbitrary code via a malformed message, as exploited by the Blaster/MSblast/LovSAN and Nachi/Welchia worms.
Known-Exploited Catalog Listings
| Catalog | Added | Remediation due | Ransomware use |
|---|---|---|---|
| Industry KEV feed | Sep 7, 2007 | n/a | Not reported |
Required action: Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Affected Products
48 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 2000Microsoft | See advisory | n/a |
| Windows 2003 ServerMicrosoft | enterprise, enterprise_64-bit, r2, standard, web | n/a |
| Windows NtMicrosoft | 4.0, 4.0-sp1, 4.0-sp2, 4.0-sp3, 4.0-sp4, 4.0-sp5, 4.0-sp6a, 4.0-sp6 | n/a |
| Windows XpMicrosoft | See advisory | n/a |
Timeline
Publicly disclosed
Aug 18, 2003
Added to Industry KEV feed
Sep 7, 2007
Last updated
Apr 15, 2026
References
- patch8205
- exploitVulnCheck exploitation report
- exploitVulnCheck exploitation report
- exploitMSF ms03_026_dcom.rb
- exploitExploitDB-100
FAQ
Common Questions.
Buffer overflow in a certain DCOM interface for RPC in Microsoft Windows NT 4.0, 2000, XP, and Server 2003 allows remote attackers to execute arbitrary code via a malformed message, as exploited by the Blaster/MSblast/LovSAN and Nachi/Welchia worms.
Affected: Windows 2000 (Microsoft); Windows 2003 Server (Microsoft) versions enterprise, enterprise_64-bit, r2, standard, web; Windows Nt (Microsoft) versions 4.0, 4.0-sp1, 4.0-sp2, 4.0-sp3, 4.0-sp4, 4.0-sp5, 4.0-sp6a, 4.0-sp6, among others. The full list is in the CVE brief.
It is exploited in the wild, listed in Industry KEV feed since Sep 7, 2007.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
No fixed version is listed yet; check the vendor advisory for mitigations.
Brandefense priority: patch immediately, because it is listed as exploited in the wild.
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