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CVE Record

CVE-2016-4294: When opening a Hangul Hcell Document (.cell) and processing a property record within the Workbook stream, H...

When opening a Hangul Hcell Document (.cell) and processing a property record within the Workbook stream, Hancom Office 2014 will attempt to allocate space for an element using a length from the file. When copying user-supplied data to this buffer, however, the application will use a different size which leads to a heap-based buffer overflow. This vulnerability can lead to code-execution under the context of the application.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2016-4294 is a file-opening vulnerability in Hancom Office 2014 HCell. A crafted .cell spreadsheet can trigger a heap buffer overflow while the application reads workbook properties, potentially allowing code to run with the user's privileges. Business risk is highest where users receive or open Hangul Hcell documents from untrusted sources. Exposure appears limited to endpoints with the named Hancom Office 2014 VP Trial HCell.exe, HCellApp.dll, or HCellBook.dll version 9.1.0.2176. The vulnerable path requires opening a crafted .cell document. The sources do not identify server-side exposure or other Hancom versions. Treat this as a targeted endpoint document risk rather than broad internet exposure. Prioritize organizations that use Hancom Office 2014 or exchange .cell files. Because sources do not name a patch, focus on inventory, vendor guidance, file controls, and removal of exposed legacy software. Mitigation focus: Inventory Hancom Office 2014 HCell installations and component versions.; Check Hancom or trusted advisory sources for fixed builds or vendor guidance.; Restrict or quarantine untrusted .cell files at email and web gateways..

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Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

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0CVSS vectors
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1Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
HancomHancom Office2014 VP Trial HCell.exe Product version: 9.1.0.2176, HCellApp.dll Product version: 9.1.0.2176 HCellBook.dll Product version: 9.1.0.2176Listed
Weakness

CWE details

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