Hancom Office 2020 vulnerabilities

3 known vulnerabilities in Hancom Office 2020 from Hancom. 3 are rated high or critical. Each entry lists the affected versions and the release that fixes it, where the vendor has published one.

Latest first

• 8.5 High severity

  Hancom Office 2018: Access of Resource Using Incompatible Type

  CVE-2025-29867Feb 4, 2026Hancom

  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 Hanco

• 7.8 High severity

  Hancom Office 2020: Use After Free

  CVE-2023-32541Sep 27, 2023Hancom

  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.

• 7.8 High severity

  Hancom Office 2020: Buffer Underwrite

  CVE-2022-33896Oct 7, 2022Hancom

  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 executi