CVE-2023-6675
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 · uneditedUnrestricted Upload of File with Dangerous Type vulnerability in National Keep Cyber Security Services CyberMath allows Upload a Web Shell to a Web Server. This issue affects CyberMath: from v.1.4 before v.1.5.
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 confidenceUnrestricted file upload vulnerability in CyberMath v1.4 allows attackers to upload malicious files, specifically web shells, directly to the web server. This bypasses any file type restrictions, enabling remote code execution once the uploaded shell is accessed.
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= 1.4CVSS 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.
-
Confirm CyberMath versionLocate the CyberMath installation and identify the version from the application header, about page, or version metadata fileAffected if The installed version is exactly 1.4
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Verify file upload feature existsNavigate the CyberMath web interface to find any file upload functionality, or inspect application source code for upload handling endpointsAffected if File upload functionality is present and accessible in the application
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Inspect upload directory locationReview the application or server configuration to determine where uploaded files are stored, checking if the directory path is within the web rootAffected if Uploaded files are stored in a directory accessible via web URL
Environment is affected if CyberMath version 1.4 is running with file upload feature enabled and uploaded files are accessible from the web root, allowing remote code execution.
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 to CyberMath v1.5 or later. If immediate upgrade is not possible, disable file upload functionality until the patch can be applied, or implement strict server-side file type validation, rename uploaded files, store them outside the web root, and disable script execution in upload directories.
CyberMath v1.5
- 1. Back up the current CyberMath v1.4 installation and database before proceeding with any changes.
- 2. Obtain the CyberMath v1.5 release from the official vendor or trusted distribution channel.
- 3. Follow the vendor's documented upgrade procedure to replace v1.4 with v1.5.
- 4. Verify the upgrade was successful and the web application functions normally.
- 5. Test that file upload functionality now properly validates file types and does not allow execution of uploaded files.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 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 $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-6675 — 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-2023-6675 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