{"id":"CVE-2016-4291","url":"https://www.cyber-defence.io/tools/cve/CVE-2016-4291","generatedAt":"2026-10-27T17:57:59.962Z","title":"When opening a Hangul HShow Document (.hpt) and processing a structure within the document, Hancom Office 2014 will use a field from the structure in an operation that can cause the integer to overflow.","description":"When opening a Hangul HShow Document (.hpt) and processing a structure within the document, Hancom Office 2014 will use a field from the structure in an operation that can cause the integer to overflow. This result is then used to allocate memory to copy file data in. Due to the lack of bounds checking on the integer, the allocated memory buffer can be made to be undersized at which point the reading of file data will write outside the bounds of the buffer. This can lead to code execution under the context of the application.","published":"2017-01-06T21:59:01.000Z","lastModified":"2026-06-17T00:47:18.000Z","status":"Modified","sourceIdentifier":"cret@cert.org","cvss":{"version":"3.0","score":7.8,"severity":"HIGH","vector":"CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"cwe":["CWE-190"],"affected":["hancom/hancom office 2014"],"epss":{"score":0.02125,"percentile":0.81792,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.13%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"http://www.securityfocus.com/bid/92325","source":"cret@cert.org"},{"url":"http://www.talosintelligence.com/reports/TALOS-2016-0146/","tags":["Exploit","Technical Description","Third Party Advisory","VDB Entry"],"source":"cret@cert.org"},{"url":"http://www.securityfocus.com/bid/92325","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.talosintelligence.com/reports/TALOS-2016-0146/","tags":["Exploit","Technical Description","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2016-4291","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}