CVE Vulnerability

CVE-2021-21958

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.

6.8 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

7.8 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1386 Exploit Third Party Advisory
https://blog.talosintelligence.com/2022/02/vuln-spotlight-.html Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:hancom:hancom_office_2020:11.0.0.2353:*:*:*:*:*:*:*
Information

Published : 2022-02-16 05:15

Updated : 2022-05-12 08:03

NVD link : CVE-2021-21958

Mitre link : CVE-2021-21958

Products Affected
No products.
CWE
CWE-787