CVE-2017-14580
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 · uneditedXnView Classic for Windows Version 2.41 allows attackers to execute arbitrary code or cause a denial of service via a crafted .jb2 file, related to a "User Mode Write AV starting at jbig2dec+0x000000000000870f."
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 confidenceXnView Classic 2.41 contains a memory corruption vulnerability in its JB2 image parser (jbig2dec library). A specially crafted .jb2 file triggers a user-mode write access violation, allowing attackers to overwrite memory and potentially achieve arbitrary code execution or cause 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= 2.41CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/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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Verify XnView Classic is installedCheck for the presence of XnView executable (typically at C:\Program Files\XnView\xnview.exe on Windows or /Applications/XnView.app on macOS)Affected if XnView Classic executable exists on the system
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Confirm the installed version is 2.41Right-click the XnView executable, select Properties, and check the File Version under the Details tab; or run 'xnview.exe /?' from command line to display versionAffected if The displayed version is exactly 2.41
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Check if JB2/JBIG2 image support is enabledOpen XnView, go to Options > General > File Formats or Options > Plug-ins, and verify whether JB2/JBIG2 format support is loaded or enabledAffected if JB2 or JBIG2 format support is listed as enabled or loaded in the plugins/settings
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Identify recent .jb2 file accessSearch the filesystem for .jb2 files (use 'dir /s /b C:\*.jb2' on Windows or 'find ~ -name "*.jb2"' on Unix-like systems) and check browser history or recently opened files in XnViewAffected if Any .jb2 files exist on the system and have been opened with the vulnerable XnView version
A user is affected if XnView Classic version 2.41 is installed with JB2/JBIG2 format support enabled and has processed or can process .jb2 files from untrusted sources.
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 to a patched version of XnView Classic that addresses the jbig2dec vulnerability, or sanitize/reject .jb2 files from untrusted sources until an update is available.
- Consultation2.0 h
- Implementation8.0 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 $4,480.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-14580 — 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-2017-14580 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
- No spam, self-promotion, credentials, or personal data