CVE-2003-0003Windows 2000 Vulnerability
Buffer overflow in the RPC Locator service for Microsoft Windows NT 4.0, Windows NT 4.0 Terminal Server Edition, Windows 2000, and Windows XP allows local users to execute arbitrary code via an RPC call to the service containing certain parameter information.
Published Feb 7, 2003 · Updated Apr 15, 2026
Key Facts
Patch immediately- CVE-2003-0003 is a high-severity vulnerability (CVSS 7.5 v2) affecting Windows 2000 Terminal Services (Microsoft), Windows 2000 (Microsoft), Windows Nt (Microsoft) and 1 more product.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 43% 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 public exploit code exists for a high-severity flaw.
Scores
CVSS v2
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS (30-day exploit likelihood)
43%
Higher than 98.7% of all scored CVEs
Exploit maturity
Proof of concept
ATLAS score
48/100
Publication score, see How it works
Exploitation Verdict
KEV listed
Not listed
Federal due date
None
No federal due date
Ransomware use
Not reported
Attributed actors
None named
Exploit & Defence Guidance
Exploit maturity
Proof of concept
Public exploit code
2
Proof-of-concept links
In-the-wild evidence
0
Reports of active use
Advisories And Exploit References
Description
Buffer overflow in the RPC Locator service for Microsoft Windows NT 4.0, Windows NT 4.0 Terminal Server Edition, Windows 2000, and Windows XP allows local users to execute arbitrary code via an RPC call to the service containing certain parameter information.
Affected Products
45 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Windows 2000 Terminal ServicesMicrosoft | See advisory | n/a |
| Windows 2000Microsoft | See advisory | 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
Feb 7, 2003
Last updated
Apr 15, 2026
References
- advisory20030130 Microsoft RPC Locator Buffer Overflow Vulnerability (#NISR29012003)
- advisory20030130 Microsoft RPC Locator Buffer Overflow Vulnerability (#NISR29012003)
- advisorywin-locator-bo(11132)
- advisoryoval:org.mitre.oval:def:103
- advisory6666
FAQ
Common Questions.
Buffer overflow in the RPC Locator service for Microsoft Windows NT 4.0, Windows NT 4.0 Terminal Server Edition, Windows 2000, and Windows XP allows local users to execute arbitrary code via an RPC call to the service containing certain parameter information.
Affected: Windows 2000 Terminal Services (Microsoft); Windows 2000 (Microsoft); 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 not listed in any known-exploited vulnerabilities catalog.
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 public exploit code exists for a high-severity flaw.
Is CVE-2003-0003 On Your Attack Surface?
Brandefense matches it against the products discovered on your perimeter and opens a finding the day a CVE like this is listed.
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