Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
22 results
Feb 4, 2026Access of Resource Using Incompatible Type ('Type Confusion') vulnerability in Hancom Inc.CVE-2025-29867 · Other software · Hancom Inc. · reported by vuln@krcert.or.krHigh 8.5
Access of Resource Using Incompatible Type ('Type Confusion') vulnerability in Hancom Inc. Hancom Office 2018, Hancom Inc. Hancom Office 2020, Hancom Inc. Hancom Office 2022, Hancom Inc. Hancom Office 2024 allows File Content Injection.This issue affects Hancom Office 2018: before 10.0.0.12681; Hancom Office 2020: before 11.0.0.8916; Hancom Office 2022: before 12.0.0.4426; Hancom Office 2024: before 13.0.0.3050.
- Product
- Hancom Office 2018
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 2, 2024Hancom Office Word DOC File Parsing Use-After-Free Remote Code Execution Vulnerability.CVE-2023-51598 · Other software · Hancom · reported by zdi-disclosures@trendmicro.comHigh 8.8
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 on the object. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-20384.
- Product
- Office
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordzerodayinitiative.comzerodayinitiative.com
May 2, 2024Hancom Office Show PPT File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability.CVE-2023-50235 · Other software · Hancom · reported by zdi-disclosures@trendmicro.comHigh 7.8
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 prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-20387.
- Product
- Office
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordzerodayinitiative.comzerodayinitiative.com
May 2, 2024Hancom Office Cell XLS File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability.CVE-2023-50234 · Other software · Hancom · reported by zdi-disclosures@trendmicro.comHigh 7.8
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 prior to copying it to a stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-20386.
- Product
- Office
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordzerodayinitiative.comzerodayinitiative.com
Sep 27, 2023A use-after-free vulnerability exists in the footerr functionality of Hancom Office 2020 HWord 11.0.0.7520.CVE-2023-32541 · Other software · Hancom · reported by talos-cna@cisco.comHigh 8.8
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.
- Product
- Hancom Office 2020
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordtalosintelligence.comtalosintelligence.com
Oct 7, 2022A buffer underflow vulnerability exists in the way Hword of Hancom Office 2020 version 11.0.0.5357 parses XML-based office files.CVE-2022-33896 · Other software · Hancom · reported by talos-cna@cisco.comHigh 7.8
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.
- Product
- Hancom Office 2020
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordtalosintelligence.comtalosintelligence.com
Feb 16, 2022A heap-based buffer overflow vulnerability exists in the Hword HwordApp.dll functionality of Hancom Office 2020 11.0.0.2353.CVE-2021-21958 · Other software · Hancom · reported by talos-cna@cisco.comHigh 7.8
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.
- Product
- Hancom Office 2020
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordtalosintelligence.comblog.talosintelligence.com
Mar 19, 2020The tfo_common component in HwordApp.dll in Hancom Office 9.6.1.7634 allows a use-after-free via a crafted .docx file.CVE-2019-16338 · Other software · Hancom · reported by MITREHigh 7.8
The tfo_common component in HwordApp.dll in Hancom Office 9.6.1.7634 allows a use-after-free via a crafted .docx file.
- Product
- Hancom Office NEO
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordhelp.hancom.comstarlabs.sg
Mar 19, 2020The hncbd90 component in Hancom Office 9.6.1.9403 allows a use-after-free via an unknown object in a crafted .docx file.CVE-2019-16337 · Other software · Hancom · reported by MITREHigh 7.8
The hncbd90 component in Hancom Office 9.6.1.9403 allows a use-after-free via an unknown object in a crafted .docx file.
- Product
- Hancom Office NEO
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordhelp.hancom.comstarlabs.sg
Dec 21, 2018Hancom 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 CVE-2018-5201 · Other software · HANCOM · reported by vuln@krcert.or.krMedium 5.5
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.
- Product
- Hancom Office
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Jan 17, 2018Hancom NEO versions 9.6.1.5183 and earlier have a buffer Overflow vulnerability that leads remote attackers to execute arbitrary commands when performing the hyCVE-2018-5195 · Other software · Hancom · reported by vuln@krcert.or.krCritical 9.8
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.
- Product
- Hancom office Hword NEO
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordhelp.hancom.comkrcert.or.kr
Apr 20, 2017Multiple heap-based buffer overflows in the (1) CBookBase::SetDefTableStyle and (2) CBookBase::SetDefPivotStyle functions in Hancom Office 2014 VP allow remote CVE-2016-4293 · Other software · Hancom · reported by cret@cert.orgHigh 7.8
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.
- Product
- Hancom Office 2014
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.comtalosintelligence.com
Jan 6, 2017When 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 elemCVE-2016-4298 · Other software · Hancom · reported by cret@cert.orgHigh 7.8
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 context of the application.
- Product
- Hancom Office 2014
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.comtalosintelligence.com
Jan 6, 2017When opening a Hangul Hcell Document (.cell) and processing a record that uses the CSSValFormat object, Hancom Office 2014 will search for an underscore ("_") cCVE-2016-4296 · Other software · Hancom · reported by cret@cert.orgHigh 7.8
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
- Product
- Hancom Office
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.comtalosintelligence.com
Jan 6, 2017When opening a Hangul Hcell Document (.cell) and processing a particular record within the Workbook stream, an index miscalculation leading to a heap overlow caCVE-2016-4295 · Other software · Hancom · reported by cret@cert.orgHigh 7.8
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.
- Product
- Hancom Office
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.comtalosintelligence.com
Jan 6, 2017When opening a Hangul Hcell Document (.cell) and processing a property record within the Workbook stream, Hancom Office 2014 will attempt to allocate space for CVE-2016-4294 · Other software · Hancom · reported by cret@cert.orgHigh 7.8
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.
- Product
- Hancom Office
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.comtalosintelligence.com
Jan 6, 2017When 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 CVE-2016-4292 · Other software · Hancom · reported by cret@cert.orgHigh 7.8
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.
- Product
- Hancom Office
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.comtalosintelligence.com
Jan 6, 2017When 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 operatiCVE-2016-4291 · Other software · Hancom · reported by cret@cert.orgHigh 7.8
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.
- Product
- Hancom Office
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.comtalosintelligence.com
Jan 6, 2017When opening a Hangul HShow Document (.hpt) and processing a structure within the document, Hancom Office 2014 will attempt to allocate space for a block of datCVE-2016-4290 · Other software · Hancom · reported by cret@cert.orgHigh 7.8
When opening a Hangul HShow Document (.hpt) and processing a structure within the document, Hancom Office 2014 will attempt to allocate space for a block of data within the file. When calculating this length, the application will use a value from the file and add a constant to it without checking whether the addition of the constant will cause the integer to overflow which will cause the buffer to be undersized when the application tries to copy file data into it. This allows one to overwrite contiguous data in the heap which can lead to code-execution under the context of the application.
- Product
- Hancom Office
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordsecurityfocus.comtalosintelligence.com
May 15, 2015Integer overflow in the HwpApp::CHncSDS_Manager function in Hancom Office HanWord processor, as used in Hwp 2014 VP before 9.1.0.2342, HanWord Viewer 2007 and VCVE-2015-2810 · Other software · Hancom · reported by MITREHigh 7.5
Integer overflow in the HwpApp::CHncSDS_Manager function in Hancom Office HanWord processor, as used in Hwp 2014 VP before 9.1.0.2342, HanWord Viewer 2007 and Viewer 2010 8.5.6.1158, and HwpViewer 2014 VP 9.1.0.2186, allows remote attackers to cause a denial of service (crash) and possibly "influence the program's execution flow" via a document with a large paragraph size, which triggers heap corruption.
- Product
- Hanword Viewer 2007
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordseclists.orgsecurityfocus.com
Jan 12, 2015Buffer overflow in Hancom Office 2010 SE allows remote attackers to execute arbitrary via a long string in the Text attribute in a TEXTART XML element in an HMLCVE-2013-7420 · Other software · Hancom · reported by MITREHigh 7.5
Buffer overflow in Hancom Office 2010 SE allows remote attackers to execute arbitrary via a long string in the Text attribute in a TEXTART XML element in an HML file.
- Product
- Hancom Office 2010 SE
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordarchives.neohapsis.comsecurityfocus.com
Feb 24, 2012Multiple integer overflows in Hancom Office 2010 SE 8.5.5 allow remote attackers to execute arbitrary code via large dimension values in a (1) JPG image to the CVE-2012-1206 · Other software · Hancom · reported by MITREHigh 9.3
Multiple integer overflows in Hancom Office 2010 SE 8.5.5 allow remote attackers to execute arbitrary code via large dimension values in a (1) JPG image to the ImportGR in the JPG image filter module (HncJpeg10.flt) or (2) PNG image to the PNG image filter module (HncPng10.flt), which triggers a heap-based buffer overflow.
- Product
- Hancom Office 2010 SE
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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