CVE-2020-7869: Mastersoft Zook

High severity, CVSS 8.8. EPSS: 1.6% chance of exploitation in the next 30 days.

An improper input validation vulnerability of ZOOK software (remote administration tool) could allow a remote attacker to create arbitrary file. The ZOOK viewer has the "Tight file CMD" function to create file. An attacker could create and execute arbitrary file in the ZOOK agent program using "Tight file CMD" without authority.

Affected products

• Mastersoft Zook: version 2.0.4.6 only

Published 2021-06-29. Last modified 2026-06-17.