CVE-2020-7869

Name: CVE-2020-7869
Creator: NVD / NIST
Published: 2021-06-29T14:15:08.237+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 1.61%

Last modified Jun 17, 2026

CVE-2020-7869 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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. EPSS estimates a 1.61% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.8/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

1.61%

72.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mastersoft	Zook	2.0.4.6

References

https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36090Third Party Advisory
https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36090Third Party Advisory

Timeline

Published: Jun 29, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-7869?

How severe is CVE-2020-7869?

CVE-2020-7869 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 1.61% probability of exploitation in the next 30 days.

How do I fix CVE-2020-7869?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-7869?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST