dbcve.org
Windows 2000Operating system · Microsoft

CVE-2009-1924

HIGH · 9.3 CVSS v2.0 Published 2009-08-12
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Integer overflow in the Windows Internet Name Service (WINS) component for Microsoft Windows 2000 SP4 allows remote WINS replication partners to execute arbitrary code via crafted data structures in a packet, aka "WINS Integer Overflow Vulnerability."

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

An integer overflow vulnerability exists in the Windows Internet Name Service (WINS) component in Windows 2000 SP4. The overflow occurs when WINS processes specially crafted data structures within replication packets from remote partners, allowing an attacker to execute arbitrary code with elevated privileges.

MitigationApply Microsoft security update MS09-039. If patching is not feasible, disable WINS service if not required, or restrict replication partners through network access controls.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Windows 2000Operating system
Affected:all versions
Windows 2003 ServerOperating system
Affected:all versions

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
M
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:M/Au:N/C:C/I:C/A:C

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify Windows version
    Run 'winver' or check System Properties to confirm the installed Windows version is Windows 2000 or Windows Server 2003.
    Affected if Version is Windows 2000 (any SP) or Windows Server 2003 (any version)
  2. Verify WINS service presence
    Open Services console (services.msc) and locate the 'Windows Internet Name Service (WINS)' entry, or run 'sc query WINS' from command prompt.
    Affected if WINS service is installed on the system
  3. Confirm WINS service status
    In Services console or via 'sc query WINS', check if the service state shows as Running.
    Affected if WINS service is currently running
  4. Check WINS replication configuration
    Open WINS console (winsmgmt.msc), right-click the server, select Properties, and review the 'Replication Partners' tab to see if replication is configured.
    Affected if WINS has replication partners configured or replication is enabled

System is affected if it runs Windows 2000 or Windows Server 2003 with WINS service installed, running, and replication configured with partners.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply Microsoft security update MS09-039. If patching is not feasible, disable WINS service if not required, or restrict replication partners through network access controls.

Recommended fix High confidence

Migrate to Windows Server 2019 or Windows Server 2022 (or current supported version); Windows 2000 and Windows 2003 Server are end-of-life and no longer receive security updates

  1. 1. Identify all systems still running Windows 2000 or Windows 2003 Server with WINS enabled.
  2. 2. Migrate critical services from these end-of-life systems to a supported Windows Server version (such as Windows Server 2019 or 2022).
  3. 3. If WINS is still required in the environment, evaluate migrating to DNS-based name resolution as WINS is deprecated.
  4. 4. If immediate migration is not possible, disable the WINS service on affected systems to reduce attack surface.
  5. 5. Implement network segmentation and firewall rules to restrict access to any remaining WINS servers to only trusted replication partners.
Caveat Upgrading from Windows 2000/2003 to newer Windows Server versions requires application compatibility testing and potential Active Directory schema updates

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Windows 2000 Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,040
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2009-1924 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
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