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Status published
High
CVE-2021-21958
A heap-based buffer overflow vulnerability exists in the Hword HwordApp.dll...
Vulnerability Description
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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
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Affected Vendor
Affected Software
Hancom
Vulnerable Versions:
Hancom Office 2020 11.0.0.2353
Timeline
Official Publish:
February 16th, 2022
Last Modified:
April 15th, 2025
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H