CVE-2018-17672
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 · uneditedThis vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Foxit Reader 9.2.0.9297. 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 handling of array indices. 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-6817.
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 confidenceThis is a use-after-free or null pointer dereference vulnerability in Foxit Reader 9.2.0.9297 where the application fails to validate object existence before performing operations on array indices. An attacker can exploit this by delivering a malicious PDF file or directing users to a malicious webpage, achieving arbitrary code execution in the context of the current user 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<= 9.2.0.9297<= 9.2.0.9297CVSS 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
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/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 installed Foxit productsOpen Windows Control Panel > Programs and Features, or check the following registry path: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\, look for entries containing 'Foxit Reader' or 'Foxit PhantomPDF'Affected if Either Foxit Reader or Foxit PhantomPDF is listed as installed
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Retrieve Foxit Reader versionIf installed, launch Foxit Reader and navigate to Help > About Foxit Reader, or right-click the application shortcut and select Properties to view the version fieldAffected if The displayed version number is 9.2.0.9297 or any version lower than 9.2.0.9297
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Retrieve Foxit PhantomPDF versionIf installed, launch PhantomPDF and navigate to Help > About Foxit PhantomPDF, or right-click the application shortcut and select Properties to view the version fieldAffected if The displayed version number is 9.2.0.9297 or any version lower than 9.2.0.9297
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Check version via Windows registryQuery the Windows registry at HKEY_LOCAL_MACHINE\SOFTWARE\FoxitSoftware\Foxit Reader\CurrentVersion (or PhantomPDF\CurrentVersion) for the 'Version' string valueAffected if The registry version value is 9.2.0.9297 or lower
You are affected if Foxit Reader or Foxit PhantomPDF version 9.2.0.9297 or any earlier version is installed on your 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.
From vendor dataApply the vendor patch from Foxit for this vulnerability. Until patched, restrict user ability to open untrusted PDF files and warn users against visiting untrusted websites.
- Consultation8.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $10,240.
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Free · runs locallyCheck whether your project pulls in CVE-2018-17672 — 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-2018-17672 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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