CVE-2020-7873: Ksystem K-System Wellcomm

Critical severity, CVSS 9.8. EPSS: 0.6% chance of exploitation in the next 30 days.

Download of code without integrity check vulnerability in ActiveX control of Younglimwon Co., Ltd allows the attacker to cause a arbitrary file download and execution.

Affected products

• Ksystem K-System Wellcomm: version 1.1 only; version 4.0 only

Published 2021-09-09. Last modified 2026-06-17.