dbcve.org
Fbx Software Development KitApplication · Autodesk

CVE-2023-27909

HIGH · 7.8 CVSS v3.1 Published 2023-04-17
Fix available
A fix is available. Upgrade to 2020.3.4 or later.
See remediation →
81/100
Remediation priority · High
No privileges

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 · unedited
An Out-Of-Bounds Write Vulnerability in Autodesk® FBX® SDK version 2020 or prior may lead to code execution through maliciously crafted FBX files or information disclosure.

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 confidence

This is an out-of-bounds write vulnerability in the Autodesk FBX SDK versions 2020 and prior. The vulnerability is triggered when processing maliciously crafted FBX files, causing memory corruption that can lead to code execution or information disclosure.

MitigationUpdate the Autodesk FBX SDK to a version newer than 2020. Until then, avoid opening FBX files from untrusted sources and implement file validation before processing.

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
Fbx Software Development KitApplication
Affected:>= 2020.0, < 2020.3.4

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
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify if the Autodesk FBX SDK is in use
    Search for FBX SDK library files on the system. Common library names include libfbxsdk, fbxsdk.dll, or FBXSDK. Check development directories, installed application folders, and common library paths.
    Affected if The FBX SDK library files are found on the system and used by any application
  2. Determine the installed FBX SDK version
    Locate version information from the FBX SDK library or associated header files. If using an application that bundles the FBX SDK, check the application or its third-party licenses documentation for the embedded SDK version.
    Affected if The discovered version matches the affected range (>= 2020.0 and < 2020.3.4)
  3. Confirm FBX file processing is active
    Determine whether any application or service on the system processes FBX files. Review application functionality to see if FBX import, export, or rendering features are used.
    Affected if FBX file processing functionality is enabled or actively used
  4. Compare installed version to affected range
    Match the identified FBX SDK version against the vulnerable range: versions 2020.0 through 2020.3.3 are affected. Versions prior to 2020.0 and version 2020.3.4 or later are not affected by this CVE.
    Affected if The installed version falls within >= 2020.0 and < 2020.3.4, and the system processes FBX files from any source

The environment is affected if the Autodesk FBX SDK version 2020.0 through 2020.3.3 is in use and any application processes FBX files.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to 2020.3.4 or later
Fixed in 2020.3.4
Interim mitigation

Update the Autodesk FBX SDK to a version newer than 2020. Until then, avoid opening FBX files from untrusted sources and implement file validation before processing.

Recommended fix Moderate confidence

2020.3.4 or later

  1. 1. Identify the currently installed FBX SDK version in your project dependencies
  2. 2. Download the FBX SDK version 2020.3.4 or later from the official Autodesk developer portal at https://www.autodesk.com/developer-center/platform-development/fbx-sdk
  3. 3. Replace the affected FBX SDK library files in your project with the updated versions
  4. 4. Rebuild and recompile any projects that link against the FBX SDK
  5. 5. Retest your application with the new FBX SDK to ensure compatibility
  6. 6. Re-scan or re-test for the vulnerability to confirm remediation
Caveat Review Autodesk release notes for 2020.3.x for any API changes that may require code adjustments

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Fbx Software Development Kit Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing4.0 h
  • Review / QA1.0 h
8.0 hours of engineering $1,340
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2023-27909 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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