CVE-2024-46483
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 · uneditedXlight FTP Server <3.9.4.3 has an integer overflow vulnerability in the packet parsing logic of the SFTP server, which can lead to a heap overflow with attacker-controlled content.
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 confidenceXlight FTP Server versions before 3.9.4.3 contain an integer overflow vulnerability in the SFTP server's packet parsing logic. This flaw allows a remote attacker to trigger a heap overflow where the overflow content can be controlled by the attacker, potentially enabling remote code execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
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
- 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 Xlight FTP Server is installedLocate the Xlight FTP Server installation directory, typically found in Program Files or a custom path. Check for the xlight.exe executable.Affected if Xlight FTP Server is present on the system
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Identify the installed versionRight-click on xlight.exe, select Properties, and check the File Version in the Details tab. Alternatively, the server may display its version in the administration interface or logs.Affected if The version number is lower than 3.9.4.3
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Verify SFTP server functionality is enabledOpen the Xlight FTP Server administration interface and navigate to the server configuration. Check if the SFTP server protocol is enabled and listening on its configured port (default is usually port 22).Affected if SFTP server is enabled and active
A user is affected if Xlight FTP Server version is below 3.9.4.3 AND the SFTP server functionality is enabled on the system.
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.
dbcve · scopedUpgrade Xlight FTP Server to version 3.9.4.3 or later to patch the integer overflow vulnerability. If immediate patching is not possible, consider disabling SFTP functionality or restricting network access to the SFTP service.
Xlight FTP Server 3.9.4.3 or later
- Download Xlight FTP Server version 3.9.4.3 or later from the official website or the project's GitHub releases.
- Stop the running Xlight FTP Server service.
- Back up the existing configuration and data directories.
- Install the new version, ensuring the configuration files are preserved.
- Restart the Xlight FTP Server service.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation1.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,376.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-46483 — 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-2024-46483 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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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.
- 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