CVE-2017-9534
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 · uneditedIrfanView version 4.44 (32bit) with FPX Plugin 4.46 allows attackers to execute arbitrary code or cause a denial of service via a crafted .fpx file, related to a "User Mode Write AV starting at FPX!GetPlugInInfo+0x0000000000017426."
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 memory corruption vulnerability exists in IrfanView's FPX (FlashPix) image plugin version 4.46 when processing specially crafted .fpx files. The flaw causes a user-mode write access violation at FPX!GetPlugInInfo, which can be leveraged for arbitrary code execution or cause the application to crash (denial of service).
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= 4.44= 4.46CVSS 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:3.0/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 installed IrfanView versionCheck the IrfanView installation directory or use the program's Help > About dialog to view the version numberAffected if The installed version is 4.44 (exact match to CVE-affected version)
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Identify FPX plugin versionLocate the FPX plugin file (typically named fpx.dll or similar FPX-related DLL in IrfanView's plugins folder) and check its version properties, or look for FPX plugin version information in IrfanView's plug-in infoAffected if The FPX plugin version is exactly 4.46 (the specific vulnerable version)
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Verify FPX plugin is enabledCheck IrfanView's Options > Settings > Plug-ins or verify the FPX plugin DLL is present in the active plugins directory and not disabledAffected if The FPX plugin is present and enabled, making the vulnerability exploitable if a malicious .fpx file is opened
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Check for recent .fpx file processingReview recent file open history, recent documents, or examine the IrfanView recent files list for .fpx extensions; alternatively, search the system for .fpx files that may have been processedAffected if Any .fpx files have been opened recently, indicating the vulnerable code path was exercised (though this does not confirm exploitation)
A user is affected if both IrfanView version 4.44 and FPX plugin version 4.46 are installed and the FPX plugin is enabled, allowing processing of .fpx files through the vulnerable GetPlugInInfo function.
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 dataUpgrade the FPX Plugin to a patched version (later than 4.46) or update IrfanView bundled components; avoid opening untrusted .fpx files from unknown sources.
- Consultation4.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,544.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-9534 — 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-2017-9534 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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