CVE-2022-33896: Hancom Office 2020

High severity, CVSS 7.8. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Hancom Hancom Office 2020: version 11.0.0.5357 only

Published 2022-10-07. Last modified 2026-06-17.