CVE-2024-11555
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 DXF File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of IrfanView. 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 parsing of DXF files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-24780.
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 confidenceIrfanView contains an out-of-bounds write vulnerability in its DXF file parser. The flaw stems from insufficient validation of user-supplied data during DXF file parsing, allowing data to be written beyond the boundaries of an allocated memory buffer. Successful exploitation enables arbitrary code execution within the context of the current process, but requires the victim to open a malicious DXF file.
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= 4.67CVSS 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:3.1/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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Check if IrfanView is installedLook for IrfanView installation directory (commonly C:\Program Files\IrfanView or C:\Program Files (x86)\IrfanView) and verify the irfanview.exe file existsAffected if IrfanView is installed on the system
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Identify installed IrfanView versionRight-click irfanview.exe, select Properties, then check the Details tab for Product Version. Alternatively, open IrfanView and go to Help > About IrfanViewAffected if Version displayed is exactly 4.67
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Verify DXF plugin support is presentCheck the IrfanView plugins directory (usually C:\Program Files\IrfanView\Plugins) for a DXF-related file (such as dxf.dll or similar). Also check if DXF files open in IrfanView by attempting to open a sample DXF fileAffected if DXF plugin files exist and DXF files can be opened in IrfanView
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Review recent file handling activityCheck Windows Recent Items, Jump Lists, or file history for any recently opened .dxf files in IrfanViewAffected if DXF files were recently opened in IrfanView
You are affected only if IrfanView version 4.67 is installed AND the DXF plugin is functional AND you have recently opened or may open untrusted DXF files with this software
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 dataAvoid opening untrusted or unverified DXF files in IrfanView. Apply any vendor patches when released and consider using alternative image viewers or disabling DXF plugin support until the vulnerability is patched.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2024-11555 — 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-2024-11555 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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