CVE-2025-5594
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 · uneditedA vulnerability has been found in FreeFloat FTP Server 1.0 and classified as critical. This vulnerability affects unknown code of the component SET Command Handler. The manipulation leads to buffer overflow. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used.
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 the SET command handler of FreeFloat FTP Server 1.0 allows remote attackers to execute arbitrary code via crafted input. The CVSS 9.8 score indicates trivial exploitability likely achieving code execution with minimal authentication or potentially pre-authentication.
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= 1.0CVSS 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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Confirm FreeFloat FTP Server installationCheck for the presence of FreeFloat FTP Server executable or service on the system. Common locations: C:\Program Files\FreeFloat or check Windows Services for 'FreeFloat FTP Server' entry.Affected if FreeFloat FTP Server is installed on the system
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Verify exact version numberRight-click on the FreeFloat FTP Server executable (typically freefloatftpserver.exe) and select Properties, then check the Details tab for the version information.Affected if Version is exactly 1.0 (the only affected version)
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Determine if FTP service is runningOpen Services console (services.msc) and check if 'FreeFloat FTP Server' service status is Running, or use command: sc query FreeFloatFTPServerAffected if The FreeFloat FTP Server service is currently running
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Check network exposureRun 'netstat -an | findstr :21' to verify port 21 (FTP) is listening, then determine if the IP is exposed externally (public IP binding) vs internal only.Affected if FTP service is bound to a publicly accessible IP address or exposed beyond internal network segments
A system is affected if FreeFloat FTP Server version 1.0 is installed and the service is running, regardless of network exposure since the vulnerability is remotely exploitable.
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 retire FreeFloat FTP Server 1.0 as it appears abandoned; migrate to a maintained FTP server solution and implement network segmentation/firewall rules to limit exposure until replacement is complete.
- Consultation3.0 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 $4,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-5594 — 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-2025-5594 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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