CVE-2024-8818
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 · uneditedPDF-XChange Editor U3D File Parsing Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of PDF-XChange Editor. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of U3D files. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-24213.
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 confidenceA use-after-free vulnerability exists in PDF-XChange Editor's U3D (Universal 3D) file parser. The vulnerability stems from the parser failing to validate object existence before performing operations on it, allowing a freed memory region to be accessed. When a user opens a specially crafted malicious U3D file embedded in a PDF, the attacker can achieve arbitrary code execution in the context of the current process.
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= 10.3.0.386= 10.3.0.386CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Identify if PDF-XChange Editor is installedCheck the program files directory (typically C:\Program Files\PDF-XChange\PDF-XChange Editor or C:\Program Files (x86)\PDF-XChange\PDF-XChange Editor) or look for the application in the Start MenuAffected if PDF-XChange Editor is present on the system
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Check the installed version of PDF-XChange EditorOpen PDF-XChange Editor, go to Help > About, or right-click the executable in program files and view Properties > Details to find the version numberAffected if The version listed is exactly 10.3.0.386
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Identify if PDF-XChange Pdf Tools is installedCheck program files for the PDF-XChange Pdf Tools directory or look for associated utilities in the application listAffected if PDF-XChange Pdf Tools is present on the system
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Check the installed version of PDF-XChange Pdf ToolsOpen any PDF-XChange Pdf Tool utility, check Help > About, or view the executable properties in the installation directoryAffected if The version listed is exactly 10.3.0.386
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Verify if U3D rendering is enabled in PDF-XChange EditorOpen PDF-XChange Editor, go to File > Preferences > Objects > 3D, or check the application settings for U3D/3D content rendering optionsAffected if U3D rendering is enabled (the vulnerability can be triggered when opening a malicious U3D file embedded in a PDF)
A user is affected if they have PDF-XChange Editor or PDF-XChange Pdf Tools version 10.3.0.386 installed AND U3D rendering is enabled, allowing malicious U3D files to trigger the use-after-free vulnerability.
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 dataApply the vendor-supplied patch or update to PDF-XChange Editor to the latest version. Until patched, avoid opening untrusted PDF files or disable U3D rendering in the application settings.
- Consultation1.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-8818 — 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-2024-8818 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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