CVE-2018-25254
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 · uneditedNICO-FTP 3.0.1.19 contains a structured exception handler buffer overflow vulnerability that allows remote attackers to execute arbitrary code by sending crafted FTP commands. Attackers can connect to the FTP service and send oversized data in response handlers to overwrite SEH pointers and redirect execution to injected shellcode.
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 confidenceNICO-FTP 3.0.1.19 has a structured exception handler buffer overflow. Attackers send oversized data in FTP command responses to overwrite the SEH pointer, redirecting execution to injected shellcode and achieving remote code execution.
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<= 3.0.1.19CVSS 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
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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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Identify NICO-FTP installationSearch for nicoftp.exe or nico-ftp related processes and services on the system. Check Program Files directories and running services.Affected if NICO-FTP executable or service is found running on the system
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Determine installed versionRight-click on nicoftp.exe, select Properties, and check the File Version tab. Alternatively, run 'nicoftp.exe -v' or check the application's About/Help section.Affected if The version is 3.0.1.19 or any version lower (e.g., 3.0.1.x, 3.0.0.x)
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Verify FTP service is activeCheck if the FTP server service is running. Use 'netstat -an | findstr :21' to check if port 21 is listening, or check Windows Services for an FTP service.Affected if Port 21 (FTP) is open and listening, indicating the vulnerable FTP service is active
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Confirm FTP handler is enabledInspect the FTP server configuration to verify the response handler module is enabled. Check application logs or configuration files for FTP command processing settings.Affected if The FTP server accepts incoming connections and processes FTP commands, enabling the vulnerable response handler
A system is affected if NICO-FTP version 3.0.1.19 or lower is installed and the FTP service is running with the response handler enabled, exposing port 21 to network traffic.
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 dataUpgrade to a patched version of NICO-FTP; if unavailable, replace with a maintained FTP server. Apply network segmentation and restrict FTP access to trusted sources as interim controls.
- Consultation8.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2018-25254 — 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-2018-25254 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
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