CVE-2012-1206
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 · uneditedMultiple integer overflows in Hancom Office 2010 SE 8.5.5 allow remote attackers to execute arbitrary code via large dimension values in a (1) JPG image to the ImportGR in the JPG image filter module (HncJpeg10.flt) or (2) PNG image to the PNG image filter module (HncPng10.flt), 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 overflows in Hancom Office 2010 SE's image filter modules (HncJpeg10.flt and HncPng10.flt) allow heap-based buffer overflows when processing JPG or PNG images with specially crafted large dimension values passed to the ImportGR function, enabling remote 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= 8.5.5CVSS 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.
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Identify if Hancom Office 2010 SE is installedCheck for Hancom Office installation directories (typically C:\Program Files\Hancom\Hancom Office 2010 SE or similar), or look for Hancom Office entries in Add/Remove Programs (appwiz.cpl)Affected if Hancom Office 2010 SE version 8.5.5 is found on the system
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Confirm the exact version numberRight-click the Hancom Office executable (e.g., HOffice.exe or similar) and view Properties > Details, or check the registry under HKLM\SOFTWARE\Hancom for the version valueAffected if The installed version is exactly 8.5.5 (this specific build is affected)
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Locate the vulnerable image filter filesSearch for HncJpeg10.flt and HncPng10.flt in the Hancom Office installation directory, typically under a filters or plugins subfolderAffected if These .flt files exist in the Hancom Office installation folder (the vulnerable modules are present)
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Check if image filter modules are enabledOpen Hancom Office, go to Tools > Options or Settings, and verify if image import filters are enabled. Alternatively, check the registry under HKCU\Software\Hancom\HancomOffice\Common\Filter for Image filtersAffected if The image filter functionality is enabled (the ImportGR function can be invoked)
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Verify the ImportGR function usageAttempt to view the properties of a JPG or PNG file association with Hancom Office, or check if the application can open image files directlyAffected if Hancom Office is configured to open JPG/PNG files using its built-in filters (the attack surface is active)
A user is affected if Hancom Office 2010 SE version 8.5.5 is installed with the HncJpeg10.flt and/or HncPng10.flt image filter modules present and enabled, allowing the application to process JPG/PNG files through the vulnerable ImportGR 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 dataAvoid opening untrusted JPG/PNG files in Hancom Office. Since this is a legacy 2010 version with no known vendor updates, migrate to a supported office suite or apply vendor-supplied patches if available.
- Consultation4.0 h
- Implementation20.0 h
- Testing10.0 h
- Review / QA6.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2012-1206 — 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-2012-1206 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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