{"id":"CVE-2016-4295","aliases":["EUVD-2016-5295","GHSA-c9vc-596v-cxc3"],"status":"published","title":"When opening a Hangul Hcell Document (.cell) and processing a particular record within the...","description":"When opening a Hangul Hcell Document (.cell) and processing a particular record within the Workbook stream, an index miscalculation leading to a heap overlow can be made to occur in Hancom Office 2014. The vulnerability occurs when processing data for a formula used to render a chart via the HncChartPlugin.hplg library. Due to a lack of bounds-checking when incrementing an index that is used for writing into a buffer for formulae, the application can be made to write pointer data outside its bounds which can lead to code execution under the context of the application.","severity":{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02224,"percentile":0.82825,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-119"],"published":"2017-01-06T21:00:00Z","modified":"2026-06-17T00:47:18Z","products":[{"vendor":"hancom","product":"hancom office"},{"vendor":"hancom","product":"hancom_office_2014"}],"references":[{"url":"http://www.talosintelligence.com/reports/TALOS-2016-0150/","tags":["x_refsource_MISC","x_transferred","Exploit","Technical Description","Third Party Advisory","VDB Entry"]},{"url":"http://www.securityfocus.com/bid/92327","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2016-4295"},{"url":"http://www.talosintelligence.com/reports/TALOS-2016-0150"},{"url":"https://github.com/advisories/GHSA-c9vc-596v-cxc3"}],"sources":{"cve":[{"id":"CVE-2016-4295","description":"When opening a Hangul Hcell Document (.cell) and processing a particular record within the Workbook stream, an index miscalculation leading to a heap overlow can be made to occur in Hancom Office 2014. The vulnerability occurs when processing data for a formula used to render a chart via the HncChartPlugin.hplg library. Due to a lack of bounds-checking when incrementing an index that is used for writing into a buffer for formulae, the application can be made to write pointer data outside its bounds which can lead to code execution under the context of the application.","status":"published","published":"2017-01-06T21:00:00Z","modified":"2024-08-06T00:25:14.023Z","updated_at":"2026-11-02T14:33:34.815789Z"}],"euvd":[{"id":"EUVD-2016-5295","description":"When opening a Hangul Hcell Document (.cell) and processing a particular record within the Workbook stream, an index miscalculation leading to a heap overlow can be made to occur in Hancom Office 2014. The vulnerability occurs when processing data for a formula used to render a chart via the HncChartPlugin.hplg library. Due to a lack of bounds-checking when incrementing an index that is used for writing into a buffer for formulae, the application can be made to write pointer data outside its bounds which can lead to code execution under the context of the application.","status":"published","published":"2017-01-06T21:00:00Z","modified":"2024-08-06T00:25:14Z","updated_at":"2026-11-03T02:22:47.294859Z"}],"ghsa":[{"id":"GHSA-c9vc-596v-cxc3","title":"When opening a Hangul Hcell Document (.cell) and processing a particular record within the...","description":"When opening a Hangul Hcell Document (.cell) and processing a particular record within the Workbook stream, an index miscalculation leading to a heap overlow can be made to occur in Hancom Office 2014. The vulnerability occurs when processing data for a formula used to render a chart via the HncChartPlugin.hplg library. Due to a lack of bounds-checking when incrementing an index that is used for writing into a buffer for formulae, the application can be made to write pointer data outside its bounds which can lead to code execution under the context of the application.","status":"published","published":"2022-05-17T03:05:16Z","modified":"2025-04-20T03:31:54Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T15:01:38.976438Z"}],"nvd":[{"id":"CVE-2016-4295","description":"When opening a Hangul Hcell Document (.cell) and processing a particular record within the Workbook stream, an index miscalculation leading to a heap overlow can be made to occur in Hancom Office 2014. The vulnerability occurs when processing data for a formula used to render a chart via the HncChartPlugin.hplg library. Due to a lack of bounds-checking when incrementing an index that is used for writing into a buffer for formulae, the application can be made to write pointer data outside its bounds which can lead to code execution under the context of the application.","status":"published","published":"2017-01-06T21:59:01.307Z","modified":"2026-06-17T00:47:18.317Z","cvss":[{"version":"3.0","score":7.8,"vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-119"],"updated_at":"2026-11-02T14:03:33.686843Z"}]}}