CVE-1999-1149
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 · uneditedBuffer overflow in CSM Proxy 4.1 allows remote attackers to cause a denial of service (crash) via a long string to the FTP port.
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 · moderate confidenceBuffer overflow vulnerability in CSM Proxy 4.1 allows remote attackers to cause a denial of service (crash) by sending an excessively long string to the FTP port.
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= 4.1CVSS 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
- None
- Integrity
- None
- Availability
- Partial
AV:N/AC:L/Au:N/C:N/I:N/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 checksWork through these to decide whether this CVE applies to you.
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Verify CSM Proxy installationCheck system for CSM Proxy software - look for installation directory, running process named 'csmproxy' or similar, or check Windows NT services if on that platformAffected if CSM Proxy version 4.1 is installed and running on the system
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Confirm exact version numberLocate the executable or check version info - typically in the CSM Proxy program files or via 'csmproxy.exe -v' if the binary supports version flagAffected if The installed version is exactly 4.1 (not a different version)
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Check if FTP proxy service is enabledInspect CSM Proxy configuration files or admin settings to determine if the FTP proxy functionality is activeAffected if FTP proxy service is enabled in CSM Proxy configuration
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Assess network exposure of FTP portUse netstat or similar tool to verify if CSM Proxy is listening on FTP port (port 21) or if the service is accessible remotelyAffected if CSM Proxy FTP service is listening and accessible on network ports
A system is affected if CSM Proxy version 4.1 is running with FTP proxy functionality enabled and accessible, as the buffer overflow triggers when a long string is sent to the FTP port.
Generated from the published advisory. Verify against your own configuration.
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 dataReplace or upgrade CSM Proxy 4.1 to a current, supported proxy solution, as this is obsolete 1999-era software with no available patches.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,120.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-1999-1149 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-1999-1149 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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