CVE-2013-3938
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 · uneditedInteger overflow in xnview.exe in XnView 2.13 allows remote attackers to execute arbitrary code via a large NUM_ELEMENTS field in an IFD_ENTRY structure in a JXR file, which triggers a heap-based buffer overflow.
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 confidenceInteger overflow in XnView 2.13's xnview.exe when parsing JXR image files. A large NUM_ELEMENTS field in an IFD_ENTRY structure within the JXR file causes an integer overflow during size calculation, leading to a heap-based buffer overflow that can be exploited for arbitrary code execution.
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= 2.13CVSS 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
- M
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:N/AC:M/Au:N/C:C/I:C/A:C
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.
-
Verify XnView installationLocate xnview.exe on the system using file search or check common installation directories (C:\Program Files\XnView or C:\Program Files (x86)\XnView)Affected if xnview.exe is found on the system
-
Confirm installed versionRight-click xnview.exe, select Properties, and check the File Version field under the Details tab. Alternatively, run 'xnview.exe -version' from command line if supportedAffected if File version shows exactly 2.13
-
Check for JXR file associationsLook for .jxr file type association with XnView in Windows Registry under HKEY_CLASSES_ROOT\.jxr or by attempting to open a JXR file with XnViewAffected if JXR files are associated with or can be opened by XnView
-
Identify vulnerable binaryConfirm the executable filename is xnview.exe and matches the affected component listed in the CVEAffected if The executable is xnview.exe in an affected XnView 2.13 installation
The system is affected if XnView version 2.13 is installed with xnview.exe capable of parsing JXR image files.
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.
dbcve · scopedUsers should refrain from opening untrusted or unknown JXR files. Organizations should consider deploying network-based controls to block potentially malicious JXR attachments and implement application whitelisting where possible.
Latest stable XnView 2.x release (contact vendor for specific version)
- 1. Download the latest version of XnView from the official website (www.xnview.com)
- 2. Uninstall the current version (2.13) from your system
- 3. Install the newly downloaded latest version
- 4. Verify the installation was successful by checking the installed version number
- 5. Test that JXR files open correctly in the new version
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 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 $4,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2013-3938 — 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-2013-3938 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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.
- 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