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XnviewApplication

CVE-2017-9899

HIGH · 7.8 CVSS v3.0 Published 2017-07-05
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
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
XnView Classic for Windows Version 2.40 allows remote attackers to execute code via a crafted .fpx file, related to "Data from Faulting Address controls Code Flow starting at Xfpx!gffGetFormatInfo+0x000000000002e388."

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

XnView Classic for Windows Version 2.40 contains a memory corruption vulnerability in its FPX image format parser. Specifically, the gffGetFormatInfo function suffers from a flaw where data from a faulting address controls code flow, allowing remote attackers to execute arbitrary code via a specially crafted .fpx file.

MitigationUsers should not open untrusted .fpx files. Consider migrating to a supported image viewer or contact XnSoft for patched versions. Deploy endpoint protection and email/web filtering to block delivery of .fpx attachments.

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
XnviewApplication
Affected:= 2.40

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:3.0/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 checks

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

  1. Verify XnView Classic installation
    Locate XnView on the system - typically installed in Program Files folder, or check Start Menu shortcuts and uninstall listings
    Affected if XnView Classic for Windows is installed and running version 2.40
  2. Confirm exact version number
    Right-click the XnView executable, select Properties, and check the Version tab; or launch XnView and go to Help > About to view the exact version
    Affected if Installed version is exactly 2.40 (any sub-version of 2.40 release)
  3. Check FPX format handler availability
    Launch XnView and check if .fpx files can be opened, or attempt to open a sample .fpx file; also check XnView Options > Formats to see if FPX is listed as a supported format
    Affected if FPX format support is enabled and XnView can parse .fpx image files

The environment is affected if XnView Classic version 2.40 is installed and the FPX image format parser is available to process malicious .fpx 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.

From vendor data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Users should not open untrusted .fpx files. Consider migrating to a supported image viewer or contact XnSoft for patched versions. Deploy endpoint protection and email/web filtering to block delivery of .fpx attachments.

Fix this in Xnview Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
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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-2017-9899 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
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