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WebadminApplication · Alt N

CVE-2003-0471

HIGH · 7.5 CVSS v2.0 Published 2003-08-07
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
84/100
Remediation priority · High
High EPSS 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
Buffer overflow in WebAdmin.exe for WebAdmin allows remote attackers to execute arbitrary code via an HTTP request to WebAdmin.dll with a long USER argument.

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

Buffer overflow vulnerability in WebAdmin.dll allows remote attackers to execute arbitrary code via HTTP requests containing an excessively long USER argument. The lack of proper bounds checking on the USER parameter in the HTTP request handler causes memory corruption, enabling remote code execution.

MitigationApply available patches or updates to WebAdmin. If no patch exists, restrict network access to WebAdmin.dll and implement input validation/length limits on the USER parameter until a fix is available.

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
WebadminApplication
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
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

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

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 if Alt N Webadmin is installed
    Search for Alt N Webadmin installation directories or check for presence of Webadmin-related files and services
    Affected if If Alt N Webadmin software is present on the system
  2. Locate WebAdmin.dll file
    Find WebAdmin.dll in the installation path or associated web server directories
    Affected if If WebAdmin.dll file exists on the system
  3. Confirm WebAdmin HTTP service is running
    Check if the Alt N Webadmin service or web module is active and processing HTTP requests
    Affected if If the WebAdmin HTTP handler is enabled and processing requests
  4. Assess network exposure of WebAdmin interface
    Determine if the WebAdmin HTTP interface is accessible from network hosts or limited to local access
    Affected if If the WebAdmin interface is network-accessible rather than localhost-only

The environment is affected if WebAdmin.dll is present with the WebAdmin HTTP service running and the USER parameter handler is accessible, since all versions of Alt N Webadmin contain the vulnerability.

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.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply available patches or updates to WebAdmin. If no patch exists, restrict network access to WebAdmin.dll and implement input validation/length limits on the USER parameter until a fix is available.

Fix this in Webadmin Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
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An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.

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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-2003-0471 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
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data