Aggregates CVE and security vulnerability intelligence across all hancom-related products, including CVSS, EPSS, publication dates, and vulnerability intelligence data.
Historical issues mainly involve vendor risk memory corruption and vendor risk path handling and related problems; some flaws may lead to vendor impact application crash, affecting vendor surface production workloads scenarios.
| CVE | Summary | Source | Max CVSS | EPSS % | Published | Updated |
|---|---|---|---|---|---|---|
| CVE-2023-51598 | Hancom Office Word DOC File Parsing Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Hancom Office Word. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of DOC files. The issue results from the lack of validating the existence of an object prior to performing operations | [email protected] | 8.8 | 0.65% | 2024-05-03 | 2025-08-14 |
| CVE-2023-50235 | Hancom Office Show PPT File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Hancom Office Show. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of PPT files. The issue results from the lack of proper validation of the length of user-supplied data p | [email protected] | 7.8 | 0.81% | 2024-05-03 | 2025-08-14 |
| CVE-2023-50234 | Hancom Office Cell XLS File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Hancom Office Cell. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of XLS files. The issue results from the lack of proper validation of the length of user-supplied data p | [email protected] | 7.8 | 0.78% | 2024-05-03 | 2025-08-15 |
| CVE-2023-40250 | Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in Hancom HCell on Windows allows Overflow Buffers.This issue affects HCell: 12.0.0.893. | [email protected] | 8.8 | 0.05% | 2024-01-12 | 2024-11-21 |
| CVE-2023-32541 | A use-after-free vulnerability exists in the footerr functionality of Hancom Office 2020 HWord 11.0.0.7520. A specially crafted .doc file can lead to a use-after-free. An attacker can trick a user into opening a malformed file to trigger this vulnerability. | [email protected] | 8.8 | 0.33% | 2023-09-27 | 2025-11-04 |
| CVE-2022-33896 | A buffer underflow vulnerability exists in the way Hword of Hancom Office 2020 version 11.0.0.5357 parses XML-based office files. A specially-crafted malformed file can cause memory corruption by using memory before buffer start, which can lead to code execution. A victim would need to access a malicious file to trigger this vulnerability. | [email protected] | 7.8 | 0.19% | 2022-10-07 | 2024-11-21 |
| CVE-2021-21958 | A heap-based buffer overflow vulnerability exists in the Hword HwordApp.dll functionality of Hancom Office 2020 11.0.0.2353. A specially-crafted malformed file can lead to memory corruption and potential arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability. | [email protected] | 7.8 | 0.78% | 2022-02-16 | 2024-11-21 |
| CVE-2020-7882 | Using the parameter of getPFXFolderList function, attackers can see the information of authorization certification and delete the files. It occurs because the parameter contains path traversal characters(ie. '../../../') | [email protected] | 7.5 | 0.29% | 2021-11-22 | 2024-11-21 |
| CVE-2019-16338 | The tfo_common component in HwordApp.dll in Hancom Office 9.6.1.7634 allows a use-after-free via a crafted .docx file. | [email protected] | 7.8 | 0.32% | 2020-03-19 | 2024-11-21 |
| CVE-2019-16337 | The hncbd90 component in Hancom Office 9.6.1.9403 allows a use-after-free via an unknown object in a crafted .docx file. | [email protected] | 7.8 | 0.33% | 2020-03-19 | 2024-11-21 |
| CVE-2018-5201 | Hancom Office 2018 10.0.0.8214 and earlier, Hancom Office NEO 9.6.1.10472 and earlier, Hancom Office 2014 9.1.1.4540 and earlier, Hancom Office 2010 8.5.8.1724 and earlier versions have a heap overflow vulnerability when handling Compound File in document. This result in a program crash or denial of service conditions. | [email protected] | 5.5 | 0.19% | 2018-12-21 | 2024-11-21 |
| CVE-2018-5195 | Hancom NEO versions 9.6.1.5183 and earlier have a buffer Overflow vulnerability that leads remote attackers to execute arbitrary commands when performing the hyperlink Attributes in document. | [email protected] | 9.8 | 1.14% | 2018-01-17 | 2024-11-21 |
| CVE-2015-6585 | hwpapp.dll in Hangul Word Processor allows remote attackers to execute arbitrary code via a crafted heap spray, and by leveraging a "type confusion" via an HWPX file containing a crafted para text tag. | [email protected] | 7.8 | 1.38% | 2017-07-25 | 2026-05-13 |
| CVE-2017-2819 | An exploitable heap-based buffer overflow exists in the Hangul Word Processor component (version 9.6.1.4350) of Hancom Thinkfree Office NEO 9.6.1.4902. A specially crafted document stream can cause an integer underflow resulting in a buffer overflow which can lead to code execution under the context of the application. An attacker can entice a user to open up a document in order to trigger this vulnerability. | [email protected] | 8.8 | 0.57% | 2017-05-24 | 2026-05-13 |
| CVE-2016-4293 | Multiple heap-based buffer overflows in the (1) CBookBase::SetDefTableStyle and (2) CBookBase::SetDefPivotStyle functions in Hancom Office 2014 VP allow remote attackers to execute arbitrary code via a crafted Hangul Hcell Document (.cell) file. | [email protected] | 7.8 | 1.12% | 2017-04-20 | 2026-05-13 |
| CVE-2016-4298 | When opening a Hangul HShow Document (.hpt) and processing a structure within the document, Hancom Office 2014 will attempt to allocate space for a list of elements using a length from the file. When calculating this length, an integer overflow can be made to occur which will cause the buffer to be undersized when the application tries to copy file data into the object containing this structure. This allows one to overwrite contiguous data in the heap which can lead to code-execution under the c | [email protected] | 7.8 | 0.53% | 2017-01-06 | 2026-05-06 |
| CVE-2016-4296 | When opening a Hangul Hcell Document (.cell) and processing a record that uses the CSSValFormat object, Hancom Office 2014 will search for an underscore ("_") character at the end of the string and write a null terminator after it. If the character is at the very end of the string, the application will mistakenly write the null-byte outside the bounds of its destination. This can result in heap corruption that can lead code execution under the context of the application | [email protected] | 7.8 | 0.53% | 2017-01-06 | 2026-05-06 |
| CVE-2016-4295 | 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 bou | [email protected] | 7.8 | 0.43% | 2017-01-06 | 2026-05-06 |
| CVE-2016-4294 | 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. | [email protected] | 7.8 | 0.82% | 2017-01-06 | 2026-05-06 |
| CVE-2016-4292 | When opening a Hangul HShow Document (.hpt) and processing a structure within the document, Hancom Office 2014 will use a static size to allocate a heap buffer yet explicitly trust a size from the file when modifying data inside of it. Due to this, an aggressor can corrupt memory outside the bounds of this buffer which can lead to code execution under the context of the application. | [email protected] | 7.8 | 0.43% | 2017-01-06 | 2026-05-06 |