CVE-2016-4294: Hancom Office 2014

High severity, CVSS 7.8. EPSS: 2.4% chance of exploitation in the next 30 days.

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.

Affected products

• Hancom Hancom Office 2014: up to and including 9.1.0.2176

Published 2017-01-06. Last modified 2026-06-17.