Description
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
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Hancom | Hancom Office 2020 | Hancom Office 2020 11.0.0.5357 | — |